AP75A - Pesticidal compounds. - Google Patents

Abstract

The present invention provides a class of novel substituted

Description

PESTICIDAL COMPOUNDS

The present invention relates to novel chemical· compounds having pesticidal activity, to methods for their preparation, to compositions containing them and to their use in the control of pests. More particularly the invention relates to a class of heterobicycloalkanes.

The use of certain 2,6,7- trioxabicyclo[2.2.2]octanes is disclosed in European Patent Applications Nos. 152229, 211598, 216625 and 216624. It has now been discovered that derivatives of these compounds have interesting pesticidal activity.

According]'/, the present invention provides a compound of the formula (1' wherein R is a C„

L - i(J bv .

A - X (I) non-aromatic hvdrocarbyl group optionally substituted >r methyl substituted by cyano, halo.

3 substituted bv halo, or a group S(0) R where R is C m

C, , alkoxv 1-^ ^J

1-6 optionalI alkyl optional;

substituted by halo and m is 0, 1 or 2, or R is phenyl optionally substituted by alkoxy, alkyl, C? alkynyl, halo, haloalkyl, cyano or a group SCO^R^ as defined hereinbefore;

2

R and R may be the same or different, and each is hydrogen, halo, or a aliphatic group optionally substituted by halo, cyano,

1-5 carbalkoxy, C alkoxy, or a group S(0) , R wherein m' is 0, 1 or 2 and i - 4 . m ,

R is C₃ alkyl; cyano, gem dimethyl, or carbalkoxy, or R and R and the carbon atoms to which they are attached form a C,. ? carbocyclic ring optionally substituted by halo, or a aliphatic or alkoxy group:

6AD original

AJR/EB/28th June 1988

A-X contains between 3 and 20 carbon atoms wherein A is a non· iromatic hvdrocarbvl group which optionally contains one to six hetero atoms which are the same or different and are each selected from oxvt;-?n, sulphur, nitrogen, fluoro or chloro and is optionally substituted bv one or two hydroxy groups, or A is a CH^O or C^SCO) group wherein n is 0,1 or 2;

X is hydrogen, halo, a group Si R?, R^, R⁷ or Sn r\ R^, R⁷ wherein r\ r^ and R⁷ are the same or different and are each a hydrocarbvl group containing up to 8 carbon atoms optionally substituted by one to three halo , C alkoxv 1-6

C , alkvl thio, C, . alkyIsulphinvl, C, . alkvlsul 1-6 · 1-6 ' ^J 1-6 pl’.onv 1 of R' to R b v three C cvano 7

C. _c acvlox; L - 6

1-4 or C carbalkoxy groups or, when one or more s alkynyl, this is optionally substituted by silyl substituted g alkyl groups, or X is a group R

7b Ο ο 0 f! i ?

9 wherein R and R are the same or different and are each independently selected from hydrogen, halo, cyano, carbalkoxy, alkyl optionally substituted by one to three halo atoms, cyano, C. carbalkoxy, CL , alkoxv ii ii or a group S(0) ,,R wherein m'' is 0, 1 or 2 and R is C, , alkvl; C, ^m 12 12¹'⁴ ' alkoxy or S(0) ,,, R wherein m' ' ’ is 0, 1 or 2 and R is C, , aikvL optionally substituted by one to three fluoro atoms, or R and R' and the

I 0 carbon atom to which they are attached form a cycloalkyl ring, and R is hydrogen, halo, hydroxy, cyano, alkoxy, acyloxy carbalkoxy or a g hydrocarbyl group optionally substituted by hydroxy, cyano,

C, , alkoxy, C, , acyloxy, C, , carbalkoxy, one to three halo atoms or a ., , alkoxy, C, , acyloxy, C, , l-u 1*^13 I'¹* group S(0) ,,,, R wherein m''’’ is 0, 1 or 2 and R^ is C alkyl, or ^m 14 14

R is a group S(0) ,,,,, R wherein m''''' is 0, 1 or 2 and R is C.

1alkyl optionally substituted by one to three fluoro atoms;

Y and Y are the same or different and are each selected from oxygen and

S(0) , where n' is 0, 1 or 2; and Z is CH„CH„, CH 0 or CH S(0) ,,, wherein n z z Z z n n'' is 0, 1 or 2;

AJR/EB/28th June 1988

BAD ORIGINAL ft

P32 provided Chat when A does not contain a OC fragment X is a group C - R I Q R'

9 10 s wherein R , R and R are as hereinbefore defined except that R and R are not hydrogen.

In the definition of Z, the first mentioned atom is adjacent to the

4-position of the bicyclic ring system.

When R is an alkyl, alkenyl or alkynyl, cycloalkyl or cycloalkenyl group this preferably contains up to 6 carbon atoms. Conveniently, when R is substituted there are up to seven substituents when the substituent is fluoro, three substituents when the substituents are chloro or bromo or one substituent when this is other than halo.

Suitably, R is an aliphatic or alicyclic group containing between 2 and 8 carbon atoms or phenyl each optionally substituted by cyano, one to seven halo atoms, alkoxy or a group S(0)_m R as hereinbefore defined.

Most suitably R is propyl, butyl, pentyl, C^ $ alkenyl or alkynvl . cyclopropylmethyl, ? cycloalkyl or phenyl each optionally substituted bv fluoro, chloro or bromo, for example, n-propyl,n-butyl, i-butyl, sec-butyl, t-butyl, prop-2-enyl, 2-methylprop-2-enyl, but-3-enyl. phenvl, cyclopentyl or cyclohexyl. Preferably R Is n-propyl, n-butyl, i-butyl, t-butyl or phenyl.

Suitably R^ is hydrogen, halo, cyano, methyl or ethyl each optionaliv substituted by cyano, methoxy, methylthio, chloro, bromo or fluoro. Most suitably R^ is hydrogen, methyl, cyano, trifluoromethyl or ethyl. Preferably is hydrogen, methyl, cyano or trifluoromethyl.

Suitably R is hydrogen, cyano, methyl or trifluoromethyl. Most suitably

2 R is hydrogen or methyl. Preferably R is hydrogen.

s L 0 0 0 0 dV

AJR/EB/28th June 1988

5AD ORIGINAL $

-6P3 2

Preferably Z is CH,S or CH,,O.

Suitably Y and Y^ are both selected from oxygen or sulphur.

Suitably A is a g non-aromatic hydrocarbyl group which optionally contains one to three hetero atoms as defined hereinbefore. In one preferred embodiment, A is a C^ θ non-aromatic hydrocarbyl group which optionally contains one hetero atom and terminates in a -OC fragment adjacent to X. Preferably A is a -(CHp^ OC- group, a — group, a -CH-CH(CH.,)₂OC- group, a CH₂O(CH₂)₂C»C- group, a - (CH₂) ^CHfCH^ )C=Cgroup, a - (CH,?) ₂ ^CH (CH 3 ; CH^OC - group, a -CH^HiCH^) (CH₂ ) ₂OC - group, a - (CH ) CH-CHOC - group or a -(CH.). OC- group and X is hydrogen or C, alkvl optionally substituted by an hydroxy, C^ alkoxy or C^ acvloxv group or one to three halo atoms. In a second preferred embodiment A is a ;*W o

O’ o

X*

-ch₂ch₂-CH-CH- or -OC-group and X is a group .8

- C I Q R' .10

Suitably R

R' and RIO are each selected from chloro, bromo, methoxy or methyl optionally substituted by methoxy or fluoro.

The compounds of the formula (I) may exist in a number of isomeric forms.

The present invention provides individual isomers of compounds of the formula (I) and mixtures thereof. The present invention also encompasses compounds of the formula (I) containing radioisotopes, particuarly those in 14 which one carbon atom is C or one to three hydrogen atoms are replaced by tritium.

One preferred group of compounds of the present invention is that of the formula (IA):

(IA)

BAD ORIGINAL

P32 is aLkvl. aLkenv! or alkynvl, each optionally substituted

2-10 wherein R bv. or methyl substituted by, cyano. halo, cycloalkyl optional!·.· , alkoxy optionally substituted bv halo, or a group substituted by halo 3

Ίas defined hereinbefore or R is cvcloalkenyl or phenyl, each optionally susubstituted by C

S(0) R m i cycloalkyl.

1-4 alkox·.

alkyl optionally substituted by up to 3 halo atoms, alkynyl, cyano or a group S(0) as defined hereinbefore;

^C4-LQ

C

1-3 halo ,

1.3 2 3

R and R may be the same or different, and each is hydrogen, halo, or an aliphatic group containing up to 3 carbon atoms optionally substituted by Z| halo, cyano, alkoxy or a group S(O)^,R as defined hereinbefore; alkyl carbalkoxy containing up to 6 carbon atoms, or alkynyl substituted bv tri-C^ alkylsilyl, or R^^a is COO-C^ ^-alkyl, cyano, gem dimethyl, or R^^a and R^a and the carbon atoms to which thev are attached form a CL , 5 - / carbocyclic ring optionally substituted by halo, alkyl or alkoxy or ^C2-3 alkenyl; a or „15 . . , , , „15’ , , „15’ .

R is a single bond, a group R wherein R is a group optionally substituted by one to five methyl groups or halo atoms wherein w is oxygen, a group S(O) wherein p is Ο, 1 or 2 or ^w^^ere^ⁿ r is 1, 2 or 3 and the fragment (C«C) X is attached to the a or b position 15 ’ ^C of the ring or R is a aliphatic chain containing between 1 and 8 carbon atoms in which one or two heteroatoms may be interspersed, the chain and

R^ being optionally substituted by one to four substituents which may be the same or different and are, each independently selected from hydroxv, oxo, halo. alkyl or alkoxy, each optionally substituted by up to halo atoms, acyloxy, epoxy, a alkylidene group, a carbalkoxy group, cyano, or a group S(O) , R wherein p’ is 0, 1 or 2 and ,a P ,4a is C

1-4 alkyl, X is selected from hydrogen, halo, hydrocarbyl optionally substituted by an hydroxy, alkoxy or C acyloxy group or one to three halo atoms, or X^a is a group Si R^^{a n}^^{a a} -- -- ”-^a -^a „7a . 5a

R R or Sn R“ R

S3 A=> 7wherein R hydrocarbyl group containing up to 6 carbon atoms optionally substituted bv ς L 0 0 0 0 dV

AJR/EB/28th June 1988

BAD ORIGINAL

-6one co chree halo, cvano, alkoxy, alkvlthio, acyloxy or carbalkoxv groups concainir.R op to 6 carbon atoms or X^a is a group R^ 0C0 wherein R^ii? is

C. alkvl:

I - o q is 0 or 1 and t is 1 or 2; provided that the sum of q and t is not greater than 2;

Y and Y^ are the same or different and are each selected from oxygen and

S(0) , where n' is 0, 1 or 2; Z is CH_o0 or CH_nS(O) , , wherein n' ' is 0, 1 n 2 2 n

n. 15 or 2, except that X cannot be hydrogen when q is 0. t is 1 and R is a single bond.

Suitable heteroatoras for interspersion in the alkylene chain include oxygen, nitrogen and sulphur, the sulphur being optionally oxidised as the sulphoxide or sulphone. Oxygen and nitrogen atoms may be adjacent to each other in which case they may form an oxime group.

d 13 2 d 1

Suitable and preferred values for the groups R , R , R , Y, Z and Y are 12 1 as defined hereinbefore for the groups R, R , R , Y, Z and Y respectively. Suitably R^ £_{s a} single bond, a 1,9-cyclohexyl group, or an aliphatic chain as hereinbefore defined having between 2 and 6 carbon atoms optionally interspersed by an oxygen or sulphur atom 17 18 19 hydrogen. Ch , alkoxymethyl or a group, Si R R R 19

R are the same or different and each is C, , alkyl.

T-9

Suitably X is , · D ¹⁷ _D13 wherein R , R and

Preferably n is 0.

One preferred group of compounds of the formula (I) of the present invention is that of the formula (IB):

(IB)

AJR/EB/28th June 1988

BAD ORIGINAL &

P 3 2 wherein R³, R^³, ,15a ci 3 1

R , X , ϊ, Y , Z and t are as hereinbefore defined and 15' is a single bond or a group R as hereinbefore defined

15_a

Suitably R 1:

1,6-eyelohexy1, t is 1 and X³ is hydrogen or alkvl optionally substituted by an hydroxy, alkoxy or acyloxy group or one to three halo atoms or R

15a £

is a single bond, t is 1 and X is C

1-6 alkyl optionally substituted by an hydroxy, alkoxy or acyloxv group or one to three halo atoms.

is preferably a tertiary group.

S 3 3 1 3

Preferably R ' is cyclohexyl, and X is hydrogen or R is a single bond and X³ is tertiarv butyl.

A further preferred group of compounds of the present invention provides is that of the formula (IC)

(1C) s L 0 0 0 0 dV wherein R is a C non-aromatic hydrocarbyl group optionally substituted j- l? 2b 3b by cyano. halo, C, alkoxy, or a group S(0) bR where R is C. , alkvl b ¹ *⁴ b L^-t4 and m is 0, 1 or 2, or R is phenyl optionally substituted by alkoxv, alkyl, alkynyl. halo, haloalkyl, cyano or a group S(0) bR

3b as defined hereinbefore;

R and R may be the same or different, and each is hydrogen, halo, or a aliphatic group optionally substituted by halo, cyano, C carbalkoxy, or alkoxy; a group S(0) wherein m’ is 0, 1 or 2 and

R is C alkyl; C alkynyl, cyano, gem dimethyl, or C carbalkoxy, or lb ~ b j 1 - j

R and R and the carbon atoms to which they are attached form a C. ,

3-/ bad original

AJR/EB/28th June 1988

-8P11 carbocyclic ring optionally substituted by halo, alkyl or alkoxy or

C, . alkenyl;

§ ^J 9 20 8

R , R are as defined hereinbefore and R is a group R as defined here inbe fore;

B is a single bond, methylene or a aliphatic chain which may contain one or two heteroatoras and/or double bonds but not triple bonds interspersed in the chain and which may be substituted by one to four substituents which may be the same or different and are each independently selected from hydroxy, oxo, halo, alkyl, alkoxy, , acyloxv, epoxy, a alkylidene group, a carbalkoxy group, haloalkyl or cyano;

D is a single bond or a group CH^O, CH^SiO)^ wherein n is 0,1 or 2, or D is a 1.2 cvclopropyl group;

Y and γΐ and Z are as defined hereinbefore provided that B cannot be a single bond or methylene group when D is a single bond.

Suitably is propyl, butyl, pentyl, C alkenyl or alkynyl, C. , cycloalkyl or phenyl each optionally substituted by fluoro, chloro or bromo. Most suitably R^ is n-propyl,n-butyl, i-butvl, sec-butyl, t-butvl, phenyl, cyclopentyl or cyclohexyl and preferably R^ is n-propyl, n-butvl, i-butyL, or t-butyl.

Suitably is hydrogen, cyano, methyl or ethyl each optionally substituted by cyano, methoxy, methylthio, chloro, bromo or fluoro. Most suitably R^^ is hydrogen, methyl, cyano, trifluoromethyl or ethyl.

Preferably R^ is hydrogen, methyl, cyano or trifluoromethyl.

Suitable heteroatoms for inclusion in B include oxygen. nitrogen and sulphur, the sulphur being optionally oxidised as the sulphoxide or sulphone .

20 9

Suitably R , R and R are each selected from chloro, bromo, methoxy or methyl optionally substituted by methoxy or fluoro.

AJR/EB/28th June 1988

BAD ORIGINAL

P32

- 9 Suit’.ihly B is a group fCH_?> or -CH-CH-.

Suitably D is a single bond.

Suitable and preferred values for the groups R^4- , Z, Y and Y’ are as defined hereinbefore for the groups R^,Z,Y and Y' respectively.

Preferred compounds of the present invention include:

L-(Hex - 5 -ynyl) - 4 - propyl - 2,6,7 - trioxabicyclo[2.2.2)octane

- ( Pent - 4 -ynv1)-4 - propyl- 3 - trifluoromethyl-2,6,7 - trioxabicvclof 2 . 2.21 octune 1 - (Hex - 5 - ynv 1) -4 - propyl - 3 - tr i f luor ome thy 1 - 2,6,7 - trioxabicyclo (2.2 . 21 octane 1 -(Pent-4-ynyl)-4-propy1-2,6,7- trioxabicyclo[2.2.2]octane - 3-carbonitr ile

1- (Hex-5-vnyl)-4-propy1 -2,6,7 - trioxabicyclo[2.2.2]octane - 3 - carbonLtrile 4 - (Cyclohexyl) -1-( pent -7» - ynyl) - 2,6,7 - tr ioxab icyclo [ 2.2.2] octane

-(Cyclohexyl)-1 -(hex-5-ynyl)- 2,6,7 -trioxabicyclo[2.2.2 ) oc tane

-1- Butyl -1 -(hex-5-ynyl)-2,6,7-trioxabicyclo[2.2.2]octane

-t-Butyl -1-(6- trimethyls ilylhex-5-ynyl)- 2,6,7-trioxabicycio[2.2.2]octane

1-(4.Ethynvleyelohexyl)-4-propyl-2,6,7-trioxabicyclo[2.2.2]octane 4 -t - Butyl -1 - (4 -e thynylcyc. lohexy1) - 2,6,7 - tr ioxab icyclo ( 2.2.2] octane (cis and trans isomers)

4-χ-Butyl-1-(3,3-dimethylbut-1-ynyl) - 2,6,7 -trioxabicyc io[2.2.2]oc tane.

- (3,3 - Dime thylbut-1-ynyl)-4 - propyl - 2,6,7 -trioxabicyclo[2.2.2]octane-3carbonitrile

-1- Butyl-1 -(hex-5-ynyl)-2,6-dioxa-7-thiabicyclo[2.2.2]octane

-(Hex - 5-ynyl) - 4-propyl - 2-oxa - 6,7-dithiabicyclo[2.2.2]oc tane

-(Hex-5-ynyl)-4-propyl-2,6,7-trithiabicyclo[2.2.2]octane

4-t-Butyl-1-[2 -(prop-2-ynylthio)ethyl]- 2,6,7 -trioxabicyclo[2.2.2]octane 4 - PropvL-1 -f 2 -(prop-2-ynylthio)ethyl]- 2,6,7 -trioxabicycio[2.2.2 j oc tane 4 -1.- Butyl -1 - [ 2 - (prop - 2 - ynyl oxy) ethyl )-2,6,7- tr ioxab icyclo [ 2.2.2 ) oc tane 4- Propyl -1-[2 - (prop - 2-ynvloxy)ethyl )-2,6,7-trioxabicyclo[2.2.2]octane - 3 carboni trile

- (But - 3 - yny lox vine thyl) - 4 - propyl - 2,6,7 - trioxabicyclo [ 2 . 2 . 2 ] oc tane s L 0 0 0 0 dV

AJR/EB/28th June 1988

BAD ORIGINAL

-ΙΟΙ -- Butvl - L - (but - 3 - vny lexeme th v 1.) -2 , 6 , 7 -trioxabIcyclo:2 . 2 . 2·oc tane l-ι fu·: - 3 - vnyloxvme thy I) - 4 - pr op v 1 - 2 . 6 . 7 -t r ioxab icyc 1 o [ 2 . 2 . 2 1 oc tane - 3 r-u o

XI

4-t- ButyL-1 -(hept- 6 -ynvl) - 2,4.7 -trioxabicyclo j 2.2.2]octane

-(Hept- 6 -vny1)-4-propyl - 2,4,7 -trIoxab icyclo[2.2.2 j oc tane

- Butyl -1-(hex - 5-ynyl)- 2.6,7 -trioxabicyclo[2.2.2]octane - 3-carbonitrile

-(Hex-5-ynyl)-4-(2-methylprop-2-enyl) -2,6,7-trioxabicyclo[2.2.2] octane- 3 carbonitrile

I · (Hex - 3 - ynyl.) - 4 - (prop - 2 - enyl) - 2,6 . 7 - tr ioxab icyc Lo ( 2. 2. 2]octane - 3-carbonit · rile

- ( But - 3-ynyloxyme thyl)-4 -(prop-2-enyl) - 2,6,7 -trioxabicyclo[2.2.2¹oc tane- 3 carboni tr ile

- ( But-3 -enyI) - 1 -^fhex- 5 -yny i) - 2,6,7 -tr ioxabicyclo[2.2.2joctane-3carbonitrite

-t. - Butyl -1 - (4 - me thy lhex - 5 - vny 1) - 2,6,7 - trioxabicyclo [ 2 . 2 . 2 ] oc tane

1-[2 - (But - 3-ynyloxy)ethyl] - 4 - propyl - 2,6,7 -trioxabicyclo[2.2.2]octane 1 -[1 - (But - 3 -ynyloxy)ethyl)-4-propyl - 2,6,7 -trioxabicyclo[2.2.2]octane 1 - (But - 3 -yny1thiome thyl)-4-propyl-2,6,7-trioxabicyclo[2.2.2]octane 4-t-Butyl-1-(but - 3-yny1thiome thyl)-2,6,7-trioxabicyclo[2.2.2]octane 4 - Butyl -1 -(hex-3-yny1)-2-oxa-6,7-dithiabicyclo[2.2.2]octane

-1.- Butyl -1 - (hex - 5 - yny 1) - 2 - oxa-6,7 - di thiabicvc io [ 2.2.2 ] oc tane

-g - Butyl - 1 - (hex - 5 - ynyl) - 2 , 6 , 1 - trioxabicyclo [ 2.2.2 ] oc tane - 3 - carboni t r i 1 e·

- (Hex - 5 -yny1) - 4 -Lsobutyl- 2,6.7 -trioxabicyclo[2.2.2]oc tane- 3-carboni tr ile 4 - E the x vine thyl -1 - (hex - 5 - yny 1) - 2,6,7 - tr ioxab icyc lo [ 2 . 2 . 2 [octane - 3 - carbon L t r ile

- (1-Methylhex-5-ynyl)-4-propyl-2,6.7-trioxabicyclo[2.2.2[octane • -1 - Butv I-1 - (1-methylhex- 5 -yny1) - 2,6,7 - tr ioxab icyclo[2.2.2', oc tane 1 - ( 1 - Me thy Lhex- 5 -ynyl)-4 -propyl-2,6,7-trioxabicyclo [2. 2.2]octane - 3 carbonitrile

Methyl 7-,;4-propyl-2.6,7-trioxabicyclo[2.2.2]oct-l-yi)hept-2 -ynoa te 1 - Hex - 5 - yny 1) - 4 - phenyl - 2,6,7 - trioxabicyclo [2.2.2] octane 1 -(Hex - 3-yny1)-4 -isobutvl- 2 - oxa - 6,7-dithiabicyclo[2.2.2]octane 1 -(Hex - 5 -ynyl) - 3-me thyl-4 - propyl - 2 - oxa-6,7-dithiabicyclo’2.2.2]octane

AJR/EB/28th June 1988

BAD ORIGINAL fi

-11; - ί.3 - Me thy 1 hex - 3-vnvl ' - > - p r··py 1 - 2.6 . - trioxab icyc lo ·] 2 . 2 . 2 ] oc tane - Ια atheni.fr 1 le

- ι, 2 - Me thvlhex - 3 - vnv L ’ - -i - propy L - 2 . 6 , 7 -t r ioxab Lcvc Lo · 2 . 2 . 2 ’octane - 3 c.arbonltrile

L - ( 3 , 3 - Dime thylbut -1 - yny 1. > - A - isobutyl - 2,6,7 - tr ioxab icyc Lo [ 2.2 . 2 ] oc tane - 3 carbonitrile

-(But-3-ynyloxymethyL)-6-propyl-2,6,7 -trithiabicyclof 2.2.2]octane I - (trans-A(e) -ethynylcyclohexyl)-A-propyl- 2,6,7-trioxabicyclo[2.2.2]oc tane - 3 - carbonitrile

A - Propyl -1-[(E/Z)- 6 - (tr inethyIs ilyl)hex-3-en-5-yny1]- 2.6,7 - trioxabicyclo [2.2.2]octane - 3 - carbon 1 tr Lie

1.- [ ' ’ E/Z) - Hex - 3 - en- 3 - ynv 1 j - A - propyl - 2,6 , 7 - tr ioxab icyc lo [ 2 . 2 . 2 ] oc t «me - 3 carbonitrile (, E : Z ~ 1.2)

- [ (E/Z) - 7 - Me thoxyhept- 3 - en- 3 -ynyl ] -A - propyl - 2,6 , 7 - tr ioxab icyc 1 ο [ 2.2 . 2 ! octane-3-carbonitriie (E:Z - 1:2)

-[(E/Z)- 7-Hydroxyhept-3 -en- 5-ynyl]-A - propyl- 2,6,7 -trioxab icyclo(2.2.2] octane - 3-carbonitrile

A -t -Butyl -1-[(E)-hex-1 -en- 5-ynyl]- 2,6,7 -trioxabicyclo(2.2.2]oc tane- 3 carbonitrile

A - Propyl-2,6,7 -trioxabicyclo ί 2.2.2]octane-1-carboxaldehyde oxime 0-(prop 2 -yny1)e ther

- (Hex - 5 -ynyl.) - A - isobutyl - 2,6,7- trithiabicyclo ( 2 . 2 . 2 j oc tane 1 - ( Hex - 3 -ynyl) - A-phenyl - 2 - oxa-6,7 - di thiabicyclo[2.2.2]octane A - Propyl -1 - (A-methylhex- 3-ynyl) -2,6,7-trioxabicyclo[2.2.2]octane - 3 carbonitrile

A - Ethyl -1 -(hex-5-yny1)- 2,6,7 -trithiabicyclo[2.2.2]octane

- (Hex - 5 -yny1) - A - phenyl- 2.6,7 -trioxabicyclo[2.2.2]octane - 3 -carboni tr11c A - Cyc lop ropy line thyl -1 - (hex - 5 - ynyl) - 2,6,7 - trioxabicyclo [2.2.2] octane - 3 carbonitrile ^a -lsobuty1 -1 - (3-methyIbex - 5 -ynyl)- 2,6,7 -trioxabicyclo[2.2.2]octane- 3 carbonitrile

- [ (s) - 3-Methylhex - 5-yny1j- A - propyl - 2,6,7-trioxabicyclo[2.2.2]oc tane - 3 carboni.trile

AP000075

AJR/EB/28th June 1988

BAD ORIGINAL

-12P32

- (2-Methylhex-5 -ynyl)-4 - (prop-2-enyl)- 2,6,7 -trioxabicyclo[2.2.2]oc cane - 3 carbonlcrile

-1- Butyl -L- (3,3 - dimethylbutyl)-2,6,7-crioxabicyclo[2.2.2]octane

1-(3,3 - Dimethylbutyl)-4-propyl - 2,6,7 -trioxabicyclo[2.2,2]octane - 3-carbonic rile

1-[(E)- 3,3-Dimethylbut-1-enyl]-4-propyl-2,6,7-trioxabicyclo[2.2.2]octane-3 carbonitrile

- (t-Butylthiomethyl)-4-propyl-2,6,7 -trioxabicyclo[2.2.2]octane-3 carbonitrile

- [2,) -1 - Fluoro - 3,3 - dime thy lbut-1 - enyl ] - 4 - propyl -2,6,7 - tr ioxabicyclo [2.2.2]octane-3 - carbonitrile

1-(Hept- 5-ynyl)-4-propyl - 2,6,7-trioxabicyclo[2.2.2]octane

By the terra hydrocarbyl group is meant alkyl, alkenyl (including cyclic * alkyl and alkenyl, and alkyl and alkenyl substituted by cyclic alkyl and alkenyl), alkynyl, aryl and aralkyl groups. Hydrocarbyioxy means a j hydrocarbyl group as defined where linked to oxygen.

Q By the term aliphatic group is meant an alkyl, alkenyl or alkynyl group.

By the term halo is meant fluoro, chloro, bromo or iodo.

In a further aspect, the present invention provides a process for the preparation of a compound of the formula (I). The process for the preparation of a compound of the formula (I) may be any method known in the art for preparing analogous compounds, for example :

(i) when Y and Y^ are oxygen and Z is C^O:

a) by the cyclisation of a compound of the formula (II)

AJR/EB/28th June 1988

BAD ORIGINAL

-13P32

wherein R to R , A and X are as hereinbefore defined, in the presence of an acid catalyst. Boron trlfluorlde etherate is a particularly preferred acid catalyst for this cyclisation which will normally be carried out in an inert solvent, such as a halogenated hydrocarbon, convenientlv dichloromethane, at or below ambient temperature, for example between -100 and 50°C and conveniently between -70 and -25°C.

The compounds of the formula (II) may be prepared by the reaction of compounds of the formulae (III) and (IV):

AP 0 0 0 0 7 5

AX (IV) such as halo or hydroxy. This reaction conveniently takes place under conditions well known to those skilled in the art, for example when L is halo in an inert solvent in the presence of base at a non-extreme temperature and when L is hydroxy in an inert solvent in the presence of a condensing agent at a non extreme temperature. When L is halo, halogenated hydrocarbons, such as dlchloromethane, are particularly suitable inert solvents and pyridine is a preferred base; when L is hydroxv, dimethylformamide is a suitable solvent, dicyclohexylcarbodiimide is a preferred condensing agent; and the reaction will conveniently be carried out at between -50 and 100°C, preferably between 0 and 25°C.

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The ’compounds of the formula III may be prepared as described in copending European Patent Applications Nos. 211598 and 216624. The compounds of the formula (IV) may be prepared by methods well known to those skilled in the art. the synthesis of XA-CO^HiXA - 4 - ethynylcyclohexyi) is described in Appendix 1.

b) when A contains a terminal C«C fragment 'j (bi) by the formula compound

HC-C-X with a compound of the reaction of a (V) :

A¹-!?

(V) wherein R to R are as hereinbefore defined, A C-C forms the group A and is a leaving group. Suitable leaving groups include halides such as bromo. The reaction is conveniently carried out in a strong base such as butyllithium, licharaide or sodamide at or below ambient temperature, for example between -70° and 30°C in an inert solvent, conveniently tetrahydrofuran or diethyl ether. Liquid ammonia is a suitable solvent when the strong base is lithamide.

The compounds of formula (V) may be prepared by the cyclisation of the corresponding compounds of the formula (VI):

(VI)

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The compounds of the formula (VI) may be prepared and cycllsed under analogous conditions used for preparing and cyclising compounds of the formula (11).

(bii)when A contains a terminal C™C fragment and X is reaction of a strong base with a compound of the hydrogen, by the formula (VII):

(VII)

1 1 wherein R to R , A . Y, Y and Z are as hereinbefore defined and Q is a group capable of conversion Into an ethynyl group, for example a group CH-C(hal)₂, (hal)CH-CH₂ or -C-CH₂ wherein hal is chloro or

0P0 (OAlk)₂ bromo, Aik is alkyl.

The reaction is conveniently carried out by methods well known to those skilled in the art, for example when Q is a group -CH-C(hal)₂ at about or below room temperature, for example between -70°C and 25°C, In an Inert solvent, conveniently an ether such as tetrahydrofuran.

AP 0 0 0 0 7 5

Butyl lithium is a convenient strong base for use in this reaction. The starting material of the formula (VII) may be prepared by the reaction of a compound of the formula (VIII)

(VIII)

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-16P 3 2'

--Τ

JE3 with a compound of the formula (AlkO)jC-A CH-Cihal)^ or by the cyclisation of a compound analogous to that of the formula (VI) t

wherein L is a group Q.

(biii) when it is required to prepare a compound of the formula (I) wherein -AX contains a -CH-CH-OC-X linkage by reaction of the corresponding compound of the formula (IX)

A -CH=CH-hal (IX) and A -CH-CH-OC-X is a group AX as defined hereinbefore. This reaction is carried out in the presence of a suitable palladium catalyst well known to those skilled in the art for this type of reaction, for example bis -triphenylphosphine palladium dichloride, and a catalytic amount of a cuprous halide, such as cuprous iodide. The reaction will normally be carried out in the presence of basic solvent such as dlethylamine or triethylamine at a non-extreme temperature, for example between -50° and 100°C and conveniently at 25°C where hal is iodo or bromo.

(c) when A contains a -CONH- group, by the reaction of a compound of the formula (X):

A COgAlk (X)

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12 with a compound NH₀CH A -X wherein R. R , R X are as defined

z. 2 2 3 hereinbefore, Aik is a group alkyl and A CONHCip A -X is a group

A-X as defined hereinbefore. This reaction takes place in an inert solvent suitably an alkanol such as methanol at a non-extreme temperature, for example between 0° and 100°, and preferably between 20° and 70°C, preferably in the presence of a catalyst such as sodium cyanide. The compounds of the formula (X) may be prepared by methods well known to those skilled in the art, for example as described for analogous compounds in European Patent Applications 152229 and 211598.

(d) when A contains a formula (XI)

COO- group, by the reaction of a compound of the (XI)

s L 0 0 0 0 dV or an alkali metal salt thereof, with a compound X A^ CH* Hal wherein ² R, R , R and X are as hereinbefore defined, hal is halogen, for

3 example bromine or chlorine, and A COjCHjA -X is a group A-X as defined hereinbefore. This reaction takes place in an inert solvent suitably a dipolar aprotic solvent such as dimethylformamide at a non-extreme temperature, for example between 0° and 180° and conveniently between 0° and 30°.

(e) when A contains a -CH-NO- group, by the reaction of a compound of the formula (XII);

(XII)

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I 2 with a compound of the formula XOCCH~-hal, wherein R, R , R . X and ^L 2 3 hal are as hereinbefore defined and A C-NOCH^A -X is a group AX as defined hereinbefore. This reaction takes place in an inert solvent, suitably an alkanol such as methanol, in the presence of a base, for example an alkali metal alkoxide such as sodium methoxide, at a non-extreme temperature, for example between 0° and 80°C and conveniently between 20° and 30°C. The compounds of the formula (XII) may be prepared by methods well known to those skilled in the art, for example as illustrated in Appendix 4.

(f) when A contains a group -0C0- by the reaction of a compound of the formula (XIII):

A²CH₂OH (XIII)

12 with a compound of the formula XA CO.H, wherein R, R , R and X are as 2 3 defined hereinbefore and A CH^OCOA -X is a group AX as defined hereinbefore. This reaction takes place in an inert solvent, conveniently a halogenated hydrocarbon such as dichloromethane, at a non-extreme temperature, for example between 0° and 100°C and conveniently between 20° and 30°C. The reaction preferably takes place in the presence of a coupling agent, such as carbodiimide for example dicylohexylcarbodiimide, and in the presence of a catalyst such as 4-dimethylaminopyridine. The compounds of the formula (XIII) may be prepared by methods well known to those skilled in the art, for example as described for analogous compounds in European Patent Applications 152229 and 211598.

(ii) when n is 0 or S

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Y - Ο or S Ζ - CH₂S or CH₂O by the reaction of a compound of the formula (XIV) with a compound of the formula (AlkO)^CAX,

(XIV)

1 wherein R,R ,R ,Α, X, Y, Y and Z are as hereinbefore defined and Aik is a alkyl group. The condensation takes place in the presence of an acid catalyst for example a mineral acid such as concentrated hydrochloric acid or boron trifluoride etherate and/or p-toluenesulphonic. The reaction is conveniently carried out without a solvent, but an inert solvent, conveniently a chlorinated hydrocarbon such as dichloromethane may be added. The reaction can also be carried out in methanol containing hydrogen chloride. The reaction is conveniently carried out at a non-extreme temperature, for example between -70°C and 150°C and normally between -10°C and 150°C. The compounds of the formula (XIV) may be prepared as described in European Patent Application No 216624, or as described in appendix 2. Compounds of the formula (XIV) wherein Y-Y^-S, Z-CH₂S and R^ - - H may also be prepared by the method described by G. R. Franzen and G. Binsch, J ,Amer.Chem.Soc. . 1973, 95 . 175 and D.J.martin and C.R.Creco, J. Ore.Chem.. 1968, 33 . 1275. The compounds of the formula (AlkO)^CAX a general procedure for the synthesis of described by S.M.McElvain and R.E.Stam,

AP 0 0 0 0 7 5 may be prepared by orthoesters and is J,Amer.Chem.Soc.. 1955, 22. 4571:

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-20P32 (iii) when Ζ - CH^S or CH^O and Y and Y are compound of the formula (XV) sulphur by reaction of a

(XV) with a compound L AX wherein R to R , A and X are as hereinbefore 1 2 defined, Z is CF^S or CH^O and L is a leaving group eg.halo. The reaction is suitably carried out in the presence of a strong base, such as butyllithium, in an inert solvent, such as an ether and conveniently tetrahydrofuran at a non-extreme temperature, such as between -70° and 30°C. The compound of the formula (XV) can be prepared by the reaction of an analogous compound of the forrau la (XIV) with HC(OAlk)j under the conditions described for reaction (ii) above.

(iv) when Y is 0 and is 0 and Z is CF^CF^ by the reaction of a compound

The reaction is carried out in acidic conditions, conveniently silica gel, followed by dilute hydrochloric acid at a non-extreme

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-21P32 temperature, i.e. between 0° and 100° and conveniently ambient temperature i.e. between 20° and 30°. The compounds of the formula (XVI) may be prepared as illustrated in Appendix 3 herein.

(v) By the interconversion of compounds of the formula (I) , for example

a) when it is desired to prepare a compound of the formula (I) wherein

A contains a terminal C«C fragment and X is other than hydrogen by the reaction of the corresponding compound wherein X is hydrogen with a compound X^ Hal wherein hal is halogen and X^ is other than hydrogen. This reaction is particularly suitable for the preparation of those compounds wherein X is a C alkyl

21 group or a group COR wherein R is a C^ & alkoxy group; or X

Is a substituted silyl or tin group. The reaction is normally carried out in the presence of a strong base, such as an alkyllithium conveniently butyllithium in an inert solvent, such as an ether, for example tetrahydrofuran, at a non-extreme temperature, for example between -50° and 50°C and convenientlv between -10° and 30°C. The starting material, i.e. the unsubstituted alkynylalkyl bicycloalkane may be prepared as described above.

(b) when it is required to prepare a compound of the formula (I) wherein A is saturated or contains a double bond by the reduction of the corresponding compound containing a double or triple bond respectively. This reaction conveniently takes place by hydrogenation in the presence of a catalyst, for example palladium on charcoal, or, when a triple bond is being reduced and it is required to stop the reduction once a double bond is formed and not proceed to the fully saturated compound, in the presence , of such a catalyst poisoned by, for example, barium sulphate. The reaction is conveniently carried out in a suitable solvent for hydrogenation experiments such as methanol

AP 0 0 0 0 7 5

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-22Ρ32 or ethyl acetate. The reaction is usually carried out at a non-extreme temperature, for example between 5° and 50°C and normally at 25°C.

(c) when A contains a terminal C-C fragment and X is hydrogen by desilylation of a compound of the formula (XVII)

2 17 18 19 1 1 wherein R,R,R,R ,R ,R , Y, Y , Z and A are as defined. This reaction may be carried out by methods well known to those skilled in the art, for example by reaction with tetrabutylammonium fluoride in an ether, such as tetrahydrofuran, at a non-extreme temperature, for example between 0° and 70°C and conveniently at 25°C.

Novel chemical intermediates also form an important aspect of the present invention. Preferred intermediates include those of the formula (II), (V), (VII), (XIV) and (XV).

The compounds of formula (I) may be used to control pests such as arthropods e.g. Insect and acarine pests, and helminths, i.e. nematodes. Thus, the present invention provides a method for the control of arthropods and/or helminths which comprises administering to the arthropod and/or helminth or to their environment an arthropodically effective amount of a compound of the formula (I). The present invention also provides a method

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-23P32 for the control and/or eradication of arthropod and/or helminth infestations of animals (including humans) and/or of plants ,( including trees) and/or stored products which comprises administering to the animal or locus an effective amount of a compound of the formula (I). The present invention further provides for the compounds of the formula (1) for use in human and veterinary medicine, in public health control and in agriculture for the control of arthropod and/or helminth pests.

The compounds of formula (I) are of particular value in the protection of field, forage, plantation, glasshouse, orchard and vineyard crops, of ornamentals and of plantation and forest trees, for example, cereals (such as maize, wheat, rice, sorghum), cotton, tobacco, vegetables and salads (such as beans, cole crops, curcurblts, lettuce, onions, tomatoes and peppers), field crops (such as potato, sugar beet, ground nuts, soyabean, oil seed rape), sugar cane, grassland and forage (such as maize, sorghum, lucerne), plantations (such as of tea, coffee, cocoa, banana, oil palm, coconut, rubber, spices), orchards and groves (such as of stone and pip fruit, citrus, kiwifruit, avocado, mango, olives and walnuts), vineyards, ornamental plants, flowers and shrubs under glass and in gardens and parks, forest trees (both deciduous and evergreen) in forests, plantations and nurseries .

They are also valuable in the protection of timber (standing, felled, converted, stored or structural) from attack by sawflies (e.g. Urocerus) or beetles (e.g. scolytids, platypodids, lyctids, bostrychlds, cerambycids, anobiids).

They have applications in the protection of stored products such as grains, fruits, nuts, spices and tobacco, whether whole, milled or compounded into products, from moth, beetle and mite attack. Also protected are stored animal products such as skins, hair, wool and feathers in natural or converted form (e.g. as carpets or textiles) from moth and beetle attack; also stored meat and fish from beetle, mite and fly attack.

AP 0 0 0 0 7 5

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-24Ρ32

Vb Ο 0 e 0 i

The .compounds of general formula I are of particular value fn the control of arthropods or helminths which are injurious to, or spread or act as vectors of diseases in man and domestic animals, for example those hereinbefore mentioned, and more especially in the control of ticks, mites, lice, fleas, midges and biting, nuisance and myiasis flies.

The compounds of Formula (I) may be used for such purposes by application of the compounds themselves or in diluted form in known fashion as a dip, spray, fog, lacquer, foam, dust, powder, aqueous suspension, paste, gel, cream, shampoo, grease, combustible solid, vapourising mat, combustible coil, bait, dietary supplement, wettable powder, granule, aerosol, emulsifiable concentrate, oil suspensions, oil solutions, pressure - pack, impregnated article, pour on formulation or other standard formulations well known to those skilled in the art. Dip concentrates are not applied per se. but diluted with water and the animals immersed in a dipping bath containing the dip wash. Sprays may be applied by hand or by means of a spray race or arch. The animal, soil, plant or surface being treated may be saturated with the spray by means of high volume application or superficially coated with the spray by means of light or ultra low volume application. Aqueous suspensions may be applied in the same manner as sprays or dips. Dusts may be distributed by means of a powder applicator or, in the case of animals, Incorporated in perforated bags attached to trees or rubbing bars. Pastes, shampoos and greases may be applied manually or distributed over the surface of an Inert material, such as chat against which animals rub and transfer the material to their skins. Pour-on formulations are dispensed as a unit of liquid of small volume on to the backs of animals such that all or most of the liquid is retained on the animals .

The compounds of Formula (I) may be prepared either as formulations ready for use on the animals, plants or surface or as formulations requiring dilution prior to application, but both types of formulation comprise a compound of Formula (I) in intimate admixture with one or more carriers or

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-25P32 diluents. The carriers may be liquid, solid or gaseous or comprise mixtures of such substances, and the compound of Formula (I) may be present in a concentration of from 0.025 to 99% w/v depending upon whether the formulation requires further dilution.

Dusts, powders and granules and other solid formulations comprise the compound of Formula (1) in intimate admixture with a powdered solid inert carrier for example suitable clays, kaolin, bentonite, attapulgite, adsorbent carbon black, talc, mica, chalk, gypsum, tricalcium phosphate, powdered cork, magnesium sillate, vegetable carriers, starch and diatomaceous earths. Such solid formulations are generally prepared by impregnating the solid diluents with solutions of the compound of formula (I) in volatile solvents, evaporating the solvents and, if desired grinding the products so as to obtain powders and, if desired, granulating, compacting or encapsulating the products.

Sprays of a compound of Formula (I) may comprise a solution in an organic solvent (e.g. those listed below) or an emulsion in water (dip wash or spray wash) prepared in the field from an emulsifiable concentrate (otherwise known as a water miscible oil) which may also be used for dipping purposes. The concentrate preferably comprises a mixture of the active ingredient, with or without an organic solvent and one or more emulsifiers. Solvents may be present within wide limits but preferably in an amount of from 0 to 90% w/v of the composition and may be selected from kerosene, ketones, alcohols, xylene, aromatic naphtha, and other solvents known in the formulating art. The concentration of emulsifiers may be varied within wide limits but is preferably in the range of 5 to 25% w/v and the emulsifiers are conveniently non-ionic surface active agents including polyoxyalkylene esters of alkyl phenols and polyoxyethylene derivatives of hexitol anhydrides and anionic surface active agents including Na lauryl sulphate, fatty alcohol ether sulphates, Na and Ca salts of alkyl afyl sulphonates and alkyl sulphosuccinates. Cationic s L 0 0 0 0 dV

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-26P32 emulsifiers include benzalkonium chloride and quaternary ammonium e thosuphates .

Amphoteric emulsifiers include carboxymethylated oleic imidazoline and alkyl dimethyl betain.

Vaporising mats normally comprise cotton and cellulose mix compressed into a board of approximately 35 x 22 x 3mm dimensions, treated with up to 0.3ml of concentrate comprising the active ingredient in an organic solvent and optionally an antioxidant, dye and perfume. The insecticide is vaporised using a heat source such as an electrically operated mat heater.

Combustible solids normally comprise of wood powder and binder mixed with the active ingredient and formed into shaped (usually coiled) strips. Dye and fungicide may also be added.

Wettable powders comprise an inert solid carrier, one or more surface active agents, and optionally stabilisers and/or anti-oxidants.

Emulsifiable concentrates comprise emulsifying agents, and often an organic solvent, such as kerosene, ketones, alcohols, xylenes, aromatic naphtha, and other solvents known in the art.

Wettable powders and emulsifiable concentrates will normally contain from 5 to 95% by weight of the active ingredient, and are diluted, for example with water, before use.

Lacquers comprise a solution of the active ingredient in an organic solvent, together with a resin, and optionally a plasticiser.

Dip washes may be prepared not only from emulsifiable concentrates but also from wettable powders, soap based dips and aqueous suspensions comprising a compound of Formula (I) in intimate admixture with a dispersing agent and one or more surface active agents.

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Aqueous suspensions of a compound of Formula (I) may comprise a suspension in water together with suspending, stabilizing or other agents. The suspensions or solutions may be applied per se or in a diluted form in known fashion.

Greases (or ointments) may be prepared from vegetable oils, synthetic esters of fatty acids or wool fat together with an inert base such as soft paraffin. A compound of Formula (I) is preferably distributed uniformly through the mixture in solution or suspension. Greases may also be made from emulsifiable concentrates by diluting them with an ointment base.

Pastes and shampoos are also semi-solid preparations in which a compound of Formula (1) may be present as an uniform dispersion in a suitable base such as soft or liquid paraffin or made on a non-greasy basis with glycerin, mucilage or a suitable soap. As greases, shampoos and pastes are usually applied without further dilution they should contain the appropriate percentage of the compound of Formula (I) required for treatment.

Aerosol sprays may be prepared as a simple solution of the active ingredient in the aerosol propellant and co-solvent such as halogenated alkanes and the solvents referred to above, respectively. Pour-on formulations may be made as a solution or suspension of a compound of Formula (I) in a liquid medium. An avian or mammal host may also be protected against infestation of acartne ectoparasites by means of carrying a suitably-moulded, shaped plastics article impregnated with a compound of Formula (I). Such articles include impregnated collars, tags, bands, sheets and strips suitably attached to appropriate parts of the body. Suitably the plastics material is a polyvinyl chloride (PVC).

The concentration of the compound of Formula (I) to be applied to an animal, premises or outdoor areas will vary according to the compound chosen, the interval between treatments, the nature of the formulation and the likely infestation, but in general 0.001 to 20.0% w/v and preferably

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0.01 to 10% of the compound should be present in the applied formulation. The amount of the compound deposited on an animal will vary according to the method of application, size of the animal, concentration of the compound in the applied formulation, factor by which the formulation is diluted and the nature of the formulation but in general will lie in the range of from 0.0001% to 0.5% w/w except for undiluted formulations such as pour-on formulations which in general will be deposited at a concentration in the range from 0.1 to 20.0% and preferably 0.1 to 10%. The amount of compound to be applied to stored products in general will lie in the range of from 0.1 to 20ppm. Space sprays may be applied to give an average initial concentration of 0.001 to lmg of compound of formula (1) per cubic metre of treated space.

. U

M The compounds of formula (I) are also of use in the protection and treatment of plant species, in which case an effective insecticidal, acaricidal or nematocidal amount of the active ingredient is applied. The application rate will vary according to the compound chosen, the nature of

Q the formulation, the mode of application, the plant species, the planting density and likely infestation and other like factors but in general, a suitable use rate for agricultural crops is in the range 0.001 to 3kg/Ha and preferably between 0.01 and lkg/Ha. Typical formulations for agricultural use contain between 0.0001% and 50% of a compound of formula (I) and conveniently between 0.1 and 15% by weight of a compound of the formula (I).

Dusts, greases, pastes and aerosol formulations are usually applied in a random fashion as described above and concentrations of 0.001 to 20% w/v of a compound of Formula (I) in the applied formulation may be used.

The compounds of formula (I) have been found to have activity against the common housefly (Musca domestical . In addition, certain compounds of formula (I) have activity against other arthropod pests including Myzus persicae. Tetranychus urticae. Plutella xvlostella. Culex spp. Tribolium

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-29P32 castaneum, Sitophilus granar ius. Periplaneta amiercana and Blattella germanica. The compounds of formula (I) are thus useful in the control of arthropods eg. insects and acarines in any environment where these constitute pests, e.g. in agriculture, in animal husbandry, in public health control and in domestic situations.

the orders Coleoptera (e.g. Cosmopolites . Lissorhoptrus.

Acalvmma, Lerna, Psvlliodes,

Insect pests Include members of Anobium.Ceutorhvnchus.Rhvnchophorus.

Meligethes, Hypothenemus, Hyleslnus,

Leptinotarsa, Gonocephalum, Agrlotes, Dermolepida, Heteronychus, Phaedon, Tribollum. Sitophilus. Diabrotica. Anthonomus or Anthrenus spp.), Lepidoptera (e.g. Ephestia. Hamestra, Earlas. Pectinophora. Ostrinia. Trlchoplusla, Pieris, Laphygma, Aarotis, Ajnathes, Wiseana, Tryporysa, Diatraea, Sporganothis, Cydia, Archips, Plutella, Chilo, Heliothis,

Spodoptera or Tineola spp.), Diptera (e.g. Musca. Aedes. Anopheles. Culex. Closslna, Slmullum, Stomoxys, Haematobia, Tabanus, Hydrotaea, Luc ilia, Chrvsomia, Callitroga, Dermatobla, Casterophilus, Hypoderma, Hylemyia, Atherigona, Chlorops. Phytomvza, Ceratltls, Llrlomyza and Melophagus spp.), Phthiraptera (Malophaga e.g. Damalina spp. and Anoplura e.g. Linognathus and Haematopinus spp.), Hemiptera (e.g. Aphis. Bemisia,Phorodon, Aeneolamia, Empoasca, Parklnslella, Pvrilla, Aonidie11a, Coccus , Pseudococus, Helopeltls, Lygus, Dysdercus, Oxvcarenus, Nezara, Aleurodes, Triatoma, Psylla, Mysus, Megoura, Phylloxera, Adelves, Niloparvata. Nephrotetix or Clmex spp.), Orthoptera (e.g. Locusta. Gryllus. Schistocerca or Acheta spp.), Dictyoptera (e.g. Blattella. Periplaneta or Blatta spp.), Hymenoptera (e.g. Athalia. Cephus. Atta. Solenopsis or Monomorium spp.), Isoptera (e.g. Odontotermes and Reticulitermes spp.), Siphonaptera (e.g. Ctenocephalldes or Pulex spp.), Thysanura (e.g. Lepjsma spp.), Dermaptera (e.g. Forficuia spp.), Pscoptera (e.g. Peripsocus spp.) and Thysanoptera (e.g. Thrios tabaci)..

Αρη η η o 7 5

Acarine pests include ticks, e.g. members of the genera Boophilus.Orni thodorus. Rhlpicephalus Amblyomnia· Hyalomma. Ixodes.

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Haemaphysalis. Dermacentor and Anocentor. and mites and manges such as Acarus, Te tranvchus, Psoroptes, Notoednes, Sarcoptes, Psorergates , Chorioptes, Eutrombicula, Demodex. Panonychus, Bryobia, Eriophyes, BLaniulus. Polyphagotarsonemus, Scutlgerella. and Oniscus spp.

Nematodes which attack plants and trees of importance to agriculture, forestry, horticulture either directly or by spreading bacterial, viral, mycoplasma or, fungal diseases of the plants, include root-knot nematodes such as Meloidogyne spp. (e.g. {J. Incognita) : cyst nematodes such as Globodera spp. (e.g. G. rostochlensls); Heterodera spp. (e.g. H. avenae); Radopholus spp. (e.g. £. similis); lesion nematodes such as Pratvlenchus spp. (e.g. P. pratensis) ; Belonolalmus spp. (e.g. £. gracilis): Tylenchulus spp. (e.g. T. semipenetrans): Rotylenchulus spp. (e.g.£. reniformis): Rotylenchus spp. (e.g. g. robustus); Helicotvlenchus spp. (e.g. H.

* multicinctus):Hemicvcliophora spp. (e.g. g. gracilis): Crlconemoides spp.

(e.g. £. slmilis); Trlchodorus spp. (e.g. I primitivus); dagger nematodes ·> such as Xiphinema spp. (e.g. X. diverslcaudatum), Longidorus spp (e.g. L.

elongatus); Hoololaimus spp, (e.g. g. coronatus): Aphelencholdes spp. (e.g. A. ritzema-bosi. 4- besseyi); stem and bulb eelworms such as Ditvlenchus spp. (e.g. D. dipsaci).

Compounds of the invention may be combined with one or more other pesticidally active ingredients (for example pyrethroids, carbamates and organophosphates) and/or with attractants, repellents, bacteriocides, fungicides, nematocides, anthelmintics and the like. Furthermore, it has been found that the activity of the compounds of the invention may be enhanced by the addition of a synergist or potentiator, for example: one of the oxidase inhibitor class of synergists, such as piperonyl butoxide or propyl 2-propynylphenylphosphonate; a second compound of the invention; or a pyrethroid pesticidal compound. When an oxidase inhibitor synergist is present in a formula of the invention, the ratio of synergist to compound of Formula (I) will be in the range 25:1-1:25 eg about 10:1.

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Stabilisers for preventing any chemical degradation which may occur with the compounds of the invention include, for example, antioxidants (such as tocopherols, butylhydroxyanisole and butylhydroxytoluene) and scavengers (such as epichlorhydrin) and organic or inorganic bases e.g. trialkylamines such as triethylamine which can act as basic stabilises and as scavengers.

S L 0 0 0 OdV

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The following Examples illustrate, in a non-limiting manner, preferred aspects of the invention. All temperatures are in degrees Celsius.

Example I

1- (Pent-4-ynyl)-4-propyl-2.6,7-trloxablcyclof 2.2,21 octane (i) To a stirred mixture of q-valeraldehyde (172g) and water (2 1) was added solid calcium hydroxide (112g) and formaldehyde solution (1.4 1 of 40% aqueous solution). The reaction temperature was maintained below 40° and the addition took about 45 minutes. The mixture was then maintained at 60° for 5 hours. The reaction mixture was filtered through Kieselguhr and the filtrates were evaporated in vacuo. The residue was treated with hot methanol (2 1) and the mixture was filtered through Kieselguhr. The filtrates were evaporated in vacuo. A viscous oily product was obtained (458g) and was purified as follows : A solution of the crude product and acetic acid (200ml) was stirred at room temperature. Acetic anhydride (1.2 1) was added over 4 hours. The temperature rose to 65°. Stirring was continued for 12 hours. The reaction mixture was added over 3 hours to cold water (3 1) with stirring. Stirring was continued for 3 hours. The aqueous mixture was extracted with diethyl ether. The ether extracts were washed with aqueous sodium hydrogen carbonate solution and then with brine. The extracts were dried over anhydrous magnesium sulphate and then evaporated in vacuo .

Distillation gave 2-hydroxymethyl-2-n-propylpropan-1,3 - diol triacetate (238g), a colourless oil (b.pt. 120-140°, 1.5mm Hg),

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Sodium (0.5g) was added to a stirred solution of the above triacetate (238g) in methanol (2.5 1). The mixture was refluxed, with stirring, for 72 hours. The mixture was evaporated in vacuo .

2-Hydroxymethyl-2-Q-propylpropan-1,3-diol (87g) was obtained as colourless crystals (m.pt. 93°).

ref. W.E. Conrad, L.A. Levasseur, R.F. Murphy, N.L. Hare and H.E. Conrad. J. ORG. CHEM 1962. £7, 2227.

(ii) A mixture of 2-hydroxymethyl-2-Q-propylpropan-1,3-diol (24.6g), diethyl carbonate (20.1ml), potassium hydroxide (0.3g) and dry ethanol (2ml) was heated to gentle reflux (oil bath 110-120°) under a stream of nitrogen for 30 minutes. After this time the ethanol formed was removed by distillation at atmospheric pressure (oil bath 130-140°, The pressure was reduced to 20mraHg and still head temperature 76 ). the oil bath temperature adjusted to 230

-Hydroxyme thv1 3-n-propyloxetane distilled as a colourless liquid (16.7g) (head temperature 120-126°).

AP 0 0 0 0 7 5 ref. European Patent Application 216624.

(iii) A solution of 5-chloro-1-pentyne (Aldrich Chemical Company, 20g) and potassium cyanide (19g) in 20% aqueous ethanol (120ml.) was heated under reflux for 20 hours. Water (600ml) was then added and the resulting mixture was extracted with diethyl ether. The combined ethereal extracts were washed with water and then with brine. The extracts were dried over anhydrous magnesium sulphate and then evaporated in vacuo.

Distillation gave 5-cyano-1-pentyne (9.9g) as a colourless oil (b.p. 67-68°, 15 mm Hg).

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-34P32 (iv> A mixture of 5-cyano-1-pentyne (9.9g) and 10% aqueous potassium hydroxide solution (100ml) was heated under reflux for 6 hours. The resulting solution was extracted with chloroform. The aqueous phase was acidified to pH 1 with concentrated hydrochloric acid and then re-extracted with dlchloromethane. The dlchloromethane extracts were washed with brine, dried over anhydrous magnesium sulphate and then evaporated in vacuo.

Distillation gave hex-5-ynoic acid (9.9g) as a colourless liquid (b.p. 66-67°, 0.6ramHg.).

(v) A mixture of hex-5-ynoic acid (lg) and thionyl chloride (1.95ml) in benzene (25ml) was heated under reflux for 3 hours. The resulting solution was cooled and then evaporated In vacuo The acid halide thus obtained was taken up in ether (5ml) and added, dropwise, to a stirred solution of 3-hydroxymethyl-3-jj-propyloxetane (1.2g) and pyridine (0.8ml) in dry ether (20ml.). The reaction mixture was stirred at room temperature for 16 hours. After this time the organic phase was washed with water, 5% hydrochloric acid, saturated sodium bicarbonate solution and brine before drying over anhydrous magnesium sulphate and then evaporation in vacuo. The residue was purified by chromatography on silica, pre-eluted with hexane containing 1% triethylamine. Elution with hexane/ether mixtures gave (3-propyloxetan-3-yl)methyl hex-5-ynoate (1.33g) as a colourless oil.

Gas-liquid chromatography (g.I.c.): OV-17 at 175° produced one peak.

Nuclear magnetic resonance spectrum (NMR) was as follows: (p.p.m.

from TMS in CDCl^, integral, number of peaks,):

4.45, 4H, s; 4.20, 2H, s; 2.8-0.8, 14H, m.

(vi) Boron trifluoride etherate (0.18ral) was added to a stirred solution of (3-propyloxetan-3-yl)methyl hex-5-ynoate (1.33g.) in dry

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-35F32 dichloromethane (25ml) at -70°. The mixture was allowed to warm to room temperature over 16 hours. Triethylamine (0.28ml) was then added and the solvent was removed in vacuo. The residue was partitioned between diethyl ether and water. The organic phase was separated and further washed with water and brine before drying over anhydrous magnesium sulphate. The solvent was evaporated in vacuo and the residue was purified by column chromatography on alumina eluting with 1 : 6 dlchloromethane hexane saturated with ammonia. l-(Pent-4ynyl)-4-propyl-2,6,7-trioxabicyclo[2.2.2]octane was obtained as a colourless oil which crystallised on trituration (0.64g) with hexane.

Gas-liquid chromatography (g.l.c): OV-17 at 200° produced one peak.

Example II

1-(Hex-5-ynvl)-4-propyl-2.6.7-trloxabicvclof 2.2,21 octane .

(i) A solution of methanesulphonyl chloride (23.7ml) in dry dichloromethane (25ml.) was added dropwise to a solution of hex-5-yn-l-ol (Lancaster Synthesis, 25g) and triethylamine (47.3ml) in dichloromethane (300ml), stirred under a nitrogen atmosphere at -70°. The resulting mixture was allowed to warm to room temperature over 16 hours. The mixture was then washed with water, dilute hydrochloric acid, saturated sodium bicarbonate solution and brine before drying over anhydrous magnesium sulphate and evaporation in vacuo. Hex-5-ynyl methanesulphonate was obtained as an oil (43.6g) and was used without purification.

Nuclear magnetic resonance spectrum (NMR) was as follows: ^H (p.p.m from TMS in CDCl-, integral, number of peaks, J ):

J Hz

4.15, 2H, t, J_u 6; 3.0, 3H, s; 2.4-1.4, 7H, m.

HZ

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-36P32 (ii) A mixture of hex-5-ynyl methanesulphonate (43.6g) and potassium cyanide (24g) in 20% aqueous ethanol (150ral) was heated under reflux for 4 hours and then stirred at room temperature overnight. Water (600ml) was added and the mixture was extracted with diethyl ether. The organic extracts were washed with water and brine before drying over anhydrous magnesium sulphate and evaporation in vacuo.

Distillation gave 6-cyano-l-hexyne (20.lg) as a colourless oil (b.p. 82-95°, 15nun Hg) .

Infrared spectrum (IR) (liquid film): 3340, 2990, 2920, 2300, 2160,

1485, 1450, 1355, 670cm'¹.

Cjj (iii) Using the method described in stage (iv) of Example I,

6-cyano-l-hexyne was converted into hept-6-ynoic acid (b.p. 78-82°,

0.75mm Hg).

CSo

Infrared spectrum (IR) (liquid film): 3340, 2980, 2160, 1730, 1435,

1310, 1255, 955, 660 cm'¹.

(iv) Using the methodology described in stages (v) and (vt) of Example I, 1 -(Hex-5-ynyl)-4-propyl - 2,6,7 -trioxabicyclo[2.2.2]octane was prepared from hept-6-ynolc acid and 3-hydroxymethyl-3-n-propyl oxetane.

Gas-liquid chromatography (g.l.c)

OV-17 at 175 produced one peak.

In an analogous manner the following compound was also prepared:1 -(Oct-7-ynyl)-4-propy1- 2,6,7 -trioxabicyclo[2.2.2]octane from oct-7 yn-l-ol (ref British patent 969,816, Chem. Abs. 1965, 62., 1571f).

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Example III

-(Pent-4-ynyl)-4-propyl-3 -trifluoromethvl- 2.6.7 -trioxabicyclo f 2.2.2¹oc Cane (i) A mixture of hex-5-ynoic acid (lg) and thionyl chloride (1.95ml) in benzene (25ml) was heated at reflux for 2.5 hours. The resulting solution was cooled and then evaporated in vacuo. The acid chloride thus obtained was taken up in dry diethyl ether (5ml) and added, dropwise, to a stirred solution of 3 - (1-hydroxy-2,2,2trifluoroethyl)-3-n-propyloxetane (1.77g) (European Patent Application No. 211598) and pyridine (0.8ral) in ether (20ral). The reaction mixture was allowed to stir at room temperature overnight. After washing with water, dilute hydrochloric acid, saturated sodium bicarbonate solution and brine, the organic phase was dried over anhydrous magnesium sulphate and then evaporated in vacuo. The residue was purified by chromatography on silica, pre-eluted with hexane containing 1% triethylaraine. Gradient elution with hexane/ether mixtures gave 2,2,2-trifluoro-1 -(3-propyloxetan3-yl)ethyl hex-5-ynoate (1.2g) as a colourless oil.

Gas-Liquid chromatography (g.l.c): OV-17 at 175° produced one peak.

Nuclear magnetic resonance spectrum (N.M.R) was as follows (p.p.m from TMS in CDCl^, integral, number of peaks,)

4.8-4.1, 5H, m; 2.7-0.8, 14H,m.

(ii) Using the method described in stage (vi) of Example I and starting from 2,2,2-trifluoro-1-(3-propyloxetan-3-yl)ethyl hex-5-ynoate,

- (pent-4-ynyl)-4-propyl-3-trifluoromethyl-2,6,7-1rioxabicyclo[2.2.2]octane was obtained as a white crystalline solid.

Gas-liquid chromatography (g.l.c): OV-17 at 170° produced one peak.

SL 0 0 0 0 dV

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In an analogous manner the following compound was prepared from hept-6-ynoic acid and 3 - (1 - hydroxy-2,2,2-trifluoroethy1) - 3-npropyloxe tane:

- (Hex - 5-ynyl)-4-propyl - 3 -trifluoromethyl- 2,6,7 -trioxabicyclo(2.2.2 J octane.

Example IV

I - (Pent-4-ynyl)-6-propyl - 2.6.7 -trioxabicycIo f 2.221 octane - 3-carbonit rile (i) A solution of dimethyl sulphoxide (12ml) in dry dichloromethane (4.0ml) was added to a solution of oxalyl chloride (7.4ml) in

Q dichloromethane (25ml) stirred at -70 under nitrogen. After the

'..Jb addition was complete the resulting mixture was stirred for a further 5 minutes at -70° before a solution of 3-hydroxyraethyl - 3-rj-propyl

J3 oxetane (10.Og) in dichloromethane (25ml) was added, dropwise, over 10 minutes. The resulting mixture was allowed to stir for a further 30 minutes when neat triethylamine (54ml) was added over approximately 30 minutes. The reaction mixture was allowed to warm to room temperature over 3 hours when it was poured into water. The organic phase was separated and the aqueous layer was further extracted with dichloromethane. The combined organic extracts were washed with dilute hydrochloric acid, saturated sodium bicarbonate and brine. The resulting organic phase was dried over anhydrous magnesium sulphate and evaporated in vacuo to give 3-formyl-3-n-propyloxetane (10.5g) (European Patent Application No. 216624) as a yellow oil.

(ii) A mixture of hex-5-ynoic acid (lg) and thionyl chloride (1.95ml) in benzene (25 ml) was heated at reflux for 3 hours. The resulting solution was allowed to cool and then evaporated in vacuo. The acid

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-39P32 chloride thus obtained was added to a stirred soLution of

3-formy1 - 3-n-propvloxetane (1.14g) in ether (50ml) followed by a solution of sodium cyanide (0.61g) in water (1ml). The resulting mixture was stirred briskly at room temperature for 16 hours. After this time the reaction mixture was washed with water, saturated sodium bicarbonate and brine, before drying over anhydrous magnesium sulphate. The solvent was removed in vacuo and the residue was purified by column chromatography on silica, pre-eluted with hexane containing 1% triethylamine. Gradient elution with hexane/ether mixtures gave 1-cyano-l-(3-propyloxetan-3-yl) methyl hex-5-ynoate as a colourless oil (1.2g).

Gas-liquid chromatography (g.l.c): OV-17 at 175° produced one peak.

Nuclear magnetic resonance spectrum (NMR) was as follows:(p.p.m from TMS in CDCl^, integral, number of peaks):

5.6, 1H, s; 4.75-4.4, 4H, m; 2.8-0.9, 14H, m.

(iii) Boron trifluoride etherate (0.25ml) was added to a solution of

1-cyano-l-(3-propyloxetan-3-yl)methyl hex-5-ynoate (0.5 g) in drv dichloromethane (10ml) stirred at -70° under a nitrogen atmosphere. The resulting solution was allowed to warm to room temperature overnight. Triethylamine (0.38ml.) was added and the solvent was removed under vacuum. The residue was partitioned between water and diethyl ether. The organic phase was separated and washed with water and brine before drying over anhydrous magnesium sulphate and evaporation in vacuo. The residue was purified by column chromatography on alumina eluting with 1:4 dichloromethane:hexane saturated with ammonia. 1-(Pent-4-ynyl)-4-propyl-2,6,7-trioxabicyclo [2.2.2]octane - 3-carbonitrile was obtained as an oil (O.25g).

APO 00 0 7 5

Gas-liquid chromatography (g.l.c): OV-17 at 175° produced one peak.

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In an analogous manner the following compounds were prepared

-(Hex-5-ynyl)-4-propyl - 2,6,7 - trioxabicyclo[2.2.2]octane - 3-carbo nitrile

- q-Butyl -1 -(hex-5-ynyl)- 2,6,7 -trioxabicyclo[2.2.2]octane-3-carbo -nitrile

4-i-Butyl-1-(hex-5-ynyl)-2,6,7-trioxabicyclo[2.2.2)octane-3-carbo -nitrile (Preparation of 2-£-butyl-2-hydroxymethylpropan-l,3-diol,

Y. Ozoe and M.Eto, Agric. Biol,Chem. 1982, 46 , 411).

- Cyclopropylmethyl-1 -(hex-5-ynyl)-2,6,7 -trioxabicyclo[ 2.2.2]octane - 3 carbonitrile , 1 -(hex-5-ynyl)-4-phenyl-2,6,7-trioxabicyclo [ 2.2.2 ] octane - 3 - carbonitrile , 1-(hex-5-ynyl)-4-i-butyl-2,6,7 -trioxabicycΙοί 2.2.2]octane - 3-carbonitrile and 1-(hex-5-ynyl)-4 -(2-methylprop- 2 enyl)- 2,6,7-trioxabicyclo[2.2.2]octane-3-carbonitrile were prepared from 3-cyclopropylmethyl-3-formyloxetane, 3-formyl-3-phenyloxetane,

3-formyl-3-i-butyloxetane and 3-formyl-3-(2-methylprop-2 -enyl)oxetane respectively. 3-Cyclopropylmethyl-3-formyloxetane, 3-formyl-3phenyloxetane, 3-formyl-3-i-butyloxetane and 3 - formyl-3 - (2-methylprop2-enyl)oxetane were prepared from diethyl cyclopropylmethylmalonate (J.A.Arvin and R. Adams, 2. Amer. Chem.Soc . 1928, £0, 1985), diethyl phenylmalonate (Aldrich), diethyl i-butylmalonate (Beilste'ln. 2, 683) and diethyl 2-methylprop-2-enylmalonate (W.J.Doran and H.A. Shonle, J. Amer. Chem. Soc 1937, 59 . 1625) using methodology described in

Example V [except that toluene replaced tetrahydrofuran as solvent in stage (i)]

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Example V

-Cvclohexvl-1 - (pent-4-vnyl) - 2.6.7 -trioxabicvclo (2.2.21 octane .

(i) Diethyl cyclohexylmalonate (18.7g) (ref. Beilstein 9, 739) was added to a stirred suspension of sodium hydride (4.8g., 50% dispersion in oil) in dry tetrahydrofuran (50ml) under nitrogen. The mixture was refluxed, with stirring, for one hour. The mixture was cooled and benzyl chloromethyl ether (13.9g.) (Sigma Chemical Company) in drv tetrahydrofuran (50ml) was added and the mixture was refluxed, with stirring, for three hours. The mixture was cooled and poured into water. The aqueous mixture was extracted with ether. The etherextracts were washed with water, dried over anhydrous magnesium sulphate and evaporated in vacuo. Diethyl 2-benzyloxymethyl-2cyclohexylraalonate (30g.) was obtained as a brown oil and was used without further purification.

(ii) Diethyl 2-benzyloxymethyl-2-cyclohexylmalonate (2g.) was added to a suspension of lithium aluminium hydride (0.63g.) in dry ether (30ml). at 0°, under nitrogen. The mixture was stirred at room temperature for twelve hours. Water (5ml) was added carefully and the mixture was stirred for ten minutes. 10% sulphuric acid solution (10ml) was added and the mixture was extracted with ether. The ether extracts were washed with water, dried over anhydrous magnesium sulphate and evaporated in vacuo. The residue was purified by chromatography on silica, eluting with 1:1 ether: hexane. 2-Benzyloxymethyl-2cyclohexylpropan-1,3-diol was obtained as a colourless oil (l.Og.).

(iii) 2-Benzyloxymethyl-2-cyclohexyl-propan-1,3-diol (5.5g.) in dry diethyl ether (50ml.) was added to liquid ammonia (200ml) at -70°. Sodium (2.5g.) was added to the stirred solution. Stirring was maintained at -70°, for 1 hour. The mixture was allowed to warm up to 0° and solid ammonium chloride (15g.) was added cautiously. The

s L 0 0 0 0 dV

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-42Ρ32 ammonia was removed from the reaction mixture under a current of nitrogen. Methanol (25ml.) was added to the stirred mixture to destroy residual sodium. Dichloromethane (400ml) was added and Che mixture was filtered. The filtrates were evaporated in vacuo.

2-Cyclohexyl-2-hydroxyraethylpropan-1,3-diol was obtained as a colourless solid (3.2g.).

(iv) A mixture of 2-cyclohexyl-2-hydroxymethylpropan-1,3-diol (3.76g), ethyl carbonate (2.42ml) and a solution of potassium hydroxide in ethanol (0.1ml of a solution of 5g in 25ral) was refluxed for 20 minutes, The apparatus was converted to distillation. Ethanol was removed by distillation (78-80°C at 760 mm Hg). When all the ethanol had been removed the residue was distilled at reduced pressure.

'SJ

3- Cyclohexyl-3-hydroxymethyloxetane (European Patent Application No. 216624) distilled as a colourless oil.

'2(v) Using the methods described in stages (v) and (vi) of Example I.

4- cyclohexyl-1 -(pent-4-ynyl)-2,6,7-trioxabicyclo (2.2.2]octane was prepared from hex-5-ynoic acid and 3-cyclohexyl - 3-hydroxymethy 1 oxetane.

Gas-liquid chromatography (g.l.c): OV-17 at 230° produced one peak.

In an analogous manner 4 - cyclohexyl-1-(hex-5-ynyl) - 2,6,7 trioxabicyclo{2.2.2]octane , was prepared from hept-6-ynoic acid.

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Example VI

-1- Butyl -1 -(hex-5 -ynyl)-2.6.7-trioxabicvclof2.2.2'octane

Method 1

Using the procedure described in stage (vi) of Example I and starting from hept-6-ynoic acid and 3-£-butyl-3-hydroxyraethyloxetane (2-£-butyl-2-hydroxymethylpropan- 1 , 3-diol was prepared by the method of Y.Ozoe and M.Eto Agr ic. Biol, Chern, 1982, 46, 411), 4-t-butyl-1-(hex-5 - ynyl)-2,6,7-trioxabievelo[2.2.2]octane was prepared.

Gas-liquid chromatography (g.l.c.): OV-17 at 230° produced one peak.

Method 2

A mixture of 2-t-butyl-2-hydroxymethylpropan-1,3-diol (0.75g) and trimethyl orthohept-6-ynoate (O.75g) (see Example XI) was heated at 50° until homogeneous. One drop of concentrated hydrochloric acid was added and the mixture was heated at 135°, under a current of nitrogen for 10 minutes. The mixture was cooled and chromatographed on alumina, eluting with 1:6 dichloromethane: hexane saturated with ammonia.

4-1-Butyl-1-(hex-5-ynyl)-2,6,7-trioxabicycLo[2.2.2]octane was obtained as colourless crystals (O.38g, recrystallised from hexane).

In an analogous manner 1 -(hex-5-ynyl)-4-phenyl-2,6,7-trioxabicyclo[2.2.2]octane was prepared from 2-hydroxymethyl-2-phenylpropan-1,3-diol (prepared from diethyl 2-phenylmalonate using methodology described in Example V) .

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Example VII

-1- Butyl -1-(6 -trimethyIs 11vlhex-5-ynyl)-2.6.7-trioxabicyclof2.2.21 octane n-Butyllithium (0.31ml. of 1.6M solution, in hexane) was added to a stirred solution of 6-£-butyl-1 -(hex-5-ynyl)-2,6,7 -trioxabicyclo[2.2.2]octane (lOOmg) in dry tetrahydrofuran (6.0ml), at 0°, under nitrogen. The reaction mixture was stirred at 0° for 15 minutes. Trimethylsilyl chloride (63μ1) was added and the mixture was allowed to warm up to 20° over a period of 2 hours. Water (0.5ml) was added and the solvent was removed in vacuo. Water was added and the aqueous mixture was extracted with diethyl ether. The ethereal extracts were washed with brine and dried over anhydrous magnesium sulphate. The solvent was removed in vacuo.

The residue was purified by chromatography on alumina (Alumina Woelm TSC) eluting with 1:6 dichloromethane;hexane saturated with ammonia.

4-£-Butyl-1 - (6- trimethylsilylhex-5-ynyl)-2,6,7-trioxabicyclo[2.2.2]octane was obtained as colourless crystals (60mg) (m.p. 87-90.5°).

Gas-liquid chromatography (g.l.c.): OV-17 at 230° produced one peak.

Example VIII

-(4-Ethynvlcyclohexvl)-6-propyl-26.7-trioxabicyclo[2.2.21 octane (i) To a stirred solution of dimethyl 1, 4-cyclohexane-dicarboxylate (20g, Aldrich) in methanol (50 ml) was added a solution of potassium hydroxide (7.3g) in methanol (75 ml). The reaction mixture was refluxed for 16 hours. After cooling the solvent was removed on a rotary evaporator. The residue was taken up in ether and water and extracted to remove unreacted starting diester. The aqueous layer was acidified with dilute hydrochloric acid and re-extracted with ether.

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The ether extracts were washed with brine and dried. Evaporation in • vacuo gave a solid. Purification was achieved by recrystallization from ethyl acetate to yield 4-methoxycarbonylcyclohexanecarboxyl ic acid (6.2g), m.pt 90.9°C.

Ref J. D. Roberts et al. J. Amer. Chem. Soc. . 1953, 75 . 637 (ii) Thionyl chloride (3.65 ml) was added to a stirred solution of 4methoxycarbonylcyclohexanecarboxylic acid (5.6 g) in dry benzene (50ml). The reaction mixture was heated to gentle reflux in an oil bath for 4 hours. The resulting solution was cooled and then evaporated in vacuo. The acid halide thus obtained was redissolved in benzene and further evaporated in vacuo. This material was used in the next stage without further purification.

Infrared Spectrum (IR) (liquid film), 179O(s), 172O(s) cm'¹.

(iii) Zinc borohydride solution (67 ml of a 0.35 M solution, Ref. V. J.

Gensler et al J Amer. Chem. Soc. 1960, 62 . 6074) and tetramethylethylenediamine (TMEDA) were successively added to a stirred solution of 4-methoxycarbonylcyclohexylcarbonyl chloride (1.02g) in THF (18 ml) at 0°C. The reaction mixture was stirred at 0°C for 30 minutes. The organic phase was then washed with dilute hydrochloric acid and brine before drying over anhydrous magnesium sulphate and then evaporation in vacuo. Methyl 4-hydroxyraethylcyclohexanecarboxylate was obtained as a semi-crystalline oil.

Infrared Spectrum (IR) (liquid film), 3400 (s.br), 1720 (s)cm ¹ Gas-liquid chromatography (g.l.c); 0V17 at 110°C produced 2 peaks (cis-, trans - Isomers . -1:1).

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Vb GOO (iv) Dimethyl sulphoxide (0.65 ml) in dry dichloromethane (5 ml) was added to a solution of oxalyl chloride (0.363 ml) in dichlororaethane (5 ml) at -70°C under a stream of nitrogen. After 5 minutes stirring a solution of methyl 4-hydroxymethylcyclohexanecarboxylate (0.64 g) in dichloromethane (5 ml) was added dropwise. The reaction mixture was stirred for 30 minutes at -70°C. Triethylamine (2.60 ml) was then added and the reaction mixture allowed to warm to room temperature during a period of 3 hours. After pouring into water (100 ml) the organic phase was washed with dilute hydrochloric acid. sodium bicarbonate solution and brine before drying over magnesium sulphate. Evaporation in vacuo gave methyl 4-formylcyclohexanecarboxvlate (0.58g) as a mixture of cis and trans - isomers.

Infrared Spectrum (IR) (liquid film), 1720 cm \s).

Gas-liquid chromatography (glc); OV17 at 120°C produced only 1 peak.

Mass Spectrum (MS), chemical ionisation M+l 171.

(v) A solution of carbon tetrabromide (1.66 g) in dry dichloromethane (10ml) was added to a stirred solution of triphenyl phosphine (2.62 g) in dry dichloromethane (10 ml) with cooling. To this orange solution was added a solution of methyl 4-formylcyclohexanecarboxylate (0.85 g) in dry dichloromethane (10 ml) under a current of nitrogen. The reaction mixture was stirred at room temperature overnight. The solvent was then removed in vacuo. The residue was mechanically 1 hour.

gave a

4-(2,2-dibromovinyl) cyclohexanecarboxylate (1.15 g) as a mixture of cis - and trans - isomers .

stirred with hexane for solution. Evaporation

Filtration gave a colourless colourless oil of methyl

Infrared Spectrum (IR) (liquid film), 1722

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Gas-liquid chromatography (glc); 0V17 at 155°C produced 2 peaks (c is and trans - isomers . -1:1).

Mass Spectrum (MS), Chemical Ionisation, (2 peaks glc/MS), both M+l, 325.

(vi) Methyl 4-(2,2-dibromovinyl) cyclohexanecarboxylate (1.15 g) was added to a stirred solution of potassium hydroxide (297 mg) in methanol (2 ml). After stirring overnight the solvent was evaporated in vacuo. The residue was partitioned between diethyl ether and water. The aqueous layer was separated and acidified with dilute hydrochloric acid. Extraction with diethyl ether gave a solution which was washed with brine and then dried over anhydrous magnesium sulphate. Evaporation in vacuo gave 4-(2,2-dibromovinyl)cyclohexanecarboxvlic acid (0.86 g) as a colourless solid.

Infrared Spectrum (IR)(Nujol mull), 1690 (s), cm \ (vii) Thionyl chloride (0.67 ml) was added to a stirred solution of

4- (2.2-dibromovinyl)cyclohexanecarboxylic acid (0.86 g) in dry benzene (25 ml). The reaction mixture was heated to gentle reflux in an oil bath for 4 hours. The resulting solution was cooled and then evaporated in vacuo. The acid halide thus obtained was redissolved in benzene and further evaporated in vacuo. 4-(2,2-dibromovinyl)cyclohexanecarbonyl chloride (0.91 g) was obtained as a pale yellow oil.

Infrared spectrum (IR)(liquid film), 179O(s) Oe \ (viii) 4-(2,2-Dlbromovinyl)cyclohexanecarbonyl chloride (0.91 g) in dry dichlororaethane (5 ml) was added to a cooled (0°C) solution of 3propyl- 3-hydroxymethyloxetane (0.406 g) and pyridine (0.64 ml) in dry dichloromethane (10 ml) under a stream of nitrogen. The reaction mixture was allowed to warm to room temperature and to stir overnight.

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Further dichloromethane was added. The organic phase was then washed with dilute hydrochloric acid, saturated sodium bicarbonate solution and brine before drying over anhydrous magnesium suLphate. The solvent was evaporated in vacuo and the residue was purified by column chromatography on silica gel, pre-eluted with hexane containing 1% triethylamine. Elution with hexane/ether (3:1) gave 3-propyloxetan3-ylmethyl 4-(2,2-dibromovinyl)cyclohexanecarboxylate (0.6 g) as a mixture of cis- and trang-Isomers.

Infrared Spectrum (IR)(liquid film), 1722 (s) cm -1

Mass spectrum (MS), chemical ionisation, 2 peaks in glc/ms in a ratio of 3 : 1, both M+l 423.

O o

o jO (ix) Boron trifluoride etherate (40 pi) was added to a stirred solution of

3-propyloxetan-3-ylmethyl 4-(2,2-dibromovinyl)cyclohexanecarboxylate (0.57 g) in dry dichloromethane (10 ml) at -70°C. The mixture was allowed to warm to room temperature over 16 hours. Triethylamine (0.6ml) was then added. The organic phase was washed with brine before drying over anhydrous magnesium sulphate. The solvent was evaporated in vacuo and the residue was purified by column chromatography on alumina eluting with 3 : 7 dichloromethane: hexane saturated with ammonia. 1-[4-(2,2-Dibromovinyl)cyclohexyl]-4-propyl - 2,6,7-trioxabicyclo(2.2.2]octane was obtained as a colourless oil (0.34 g) .

Infrared spectrum (IR)(liquid film), 1060, 1020 cm

Mass spectrum (MS), chemical ionisation, 2 peaks in glc/ms in a ratio of 3 : 1, both M+l 423.

(x) n-Butyllithium (1.6 ml of a 1.1 M solution in hexane) was added at

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-70°C to a solution of I-[4-(2,2-dibromovinyl)cyclohexyl]-4-propyl2,6,7-trioxabicyclo[2.2.21octane (0.25 g) In dry tetrahydro furan (5ml) under a stream of nitrogen. After warming to room temperature over hours ether (-25 ml) was added. The ethereal solution was washed with brine and dried over anhydrous magnesium sulphate. The solvent was removed in vacuo and the residue was purified by column chromatography on alumina eluting with 3 7 dlchloromethane: hexane saturated with ammonia. 1 -(4-Ethynylcyclohexyl)-4-propyl-2,6,7 -trioxabicyclo(2.2.2;

octane was obtained as a colourless oil (0.13g).

Example IX

-1- Butyl-1-(4-Ethynylcyclohexyl·)- 2.6.7 -trioxabicyclo ί 22.21oc tane

Method 1 (i) Using the method described in stage (viii) of Example VIII and starting from 4-(2,2-dibromovinyl)cyclohexanexcarbonyl chloride and 3-t-butvl- 3 - hydroxymethyloxetane,3-£-butyloxetan-3-ylmethy1

-(2,2-dibromovinyl)cyclohexane carboxylate was prepared as a mixture of cis- and trans - Isomers .

(ii) Using the method described in Stage (ix) of Example VIII and starting from 3-t-butyloxetan-3-ylmethyl 4-(2,2-dibromovinyl)cyclohexane ' carboxylate ,4-^-butyl-1-(4-(2,2-dlbromovinyl) cyclohexyl)-2,6,7 -trioxabicyclo [2.2.2[octane was obtained as a colourless oil, as a mixture of cis - and trans - isomers.

(iii) Using the method described in Stage (x) of Example VIII and starting from 4-t-buty1-1-(4-(2,2 -dlbromovinyl) cyclohexyl (-2,6,7trioxabicyclo[2.2.2]octane , 4-t-butyl-1-(4-ethynylcyclohexyl)- 2.6,7AP 0 0 0 0 7 5

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-50P32 trioxabicycΙο[2.2.2]octane was obtained as a colourless solid, (m.pt • 125.9-131.8°C.) as a mixture of cis and trans isomers.

Both cis and trans 4-t-butyl-l-(4-ethynylcyclohexyi)-2.6,7-trioxabicyclo[2.2.2]octane were obtained as follows:

(a) cis and trans Methyl 4-(22-dibromovlnyl·)cyclohexanecarboxyl·ate

Chromatographic separation of a mixture of cis - and trans - isomers of methyl 4-(2,2-dibromovinyl)cyclohexanecarboxylate (Example VIII. stage (v)), on silica gel, eluting with ether (10%) in hexane gave cis and trans methyl 4 - (2,2 - dibromovinyl)cyclohexanecarboxylate as colourless i ^oils· *

' (b) cis-4-(2.2-Dibromovinyl)cyclohexanecarboxvllc acid cis-Methyl 4-(2,2-dibromovinyl)cyclohexanecarboxylate (4g) was heated | to reflux in a solution of hydrobromic acid (48%, 20ml) and acetic acid (40ml). After heating for 4 hours the solvent was removed under reduced pressure. Water (50ml) was added and the mixture extracted with diethyl ether. The ether extracts were extracted with sodium bicarbonate solution. The aqueous layer was then acidified and re-extracted with ether. The ethereal layer washed with brine and dried over anhydrous magnesium sulphate. Evaporation gave cis-4-(2.2-dibromovinyl)cyclohexanecarboxylie acid (3.6g) as a pale yellow oil.

(c) trans -4-(2.2-Dlbromovlnyl)cyclohexanecarboxylic acid trans-Methyl 4-(2,2-dibromovlnyl)cyclohexanecarboxylate (4.2g) was stirred in a solution of potassium hydroxide (1.09g) in methanol (50ml) overnight. The solvent was then removed under reduced pressure. Water (50ml) was added and the mixture extracted with

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-51P32 diethyl ether. The aqueous layer was then acidified with hydrochloric acid. Re-extraction with ether was followed by washing of the organic layer with brine and drying over anhydrous magnesium sulphate. Evaporation gave trans-4-(2,2-dibromovinyl) cyclohexanecarboxylic acid (3.6g) as a pale yellow oil.

(iv) cis- and trans-4-(2,2-dibromovinyl)cyclohexanecarboxylic acids were then converted into cis- and trans-4 -1-butyl -1 - (4-ethvnvlcyclohexvI) 2,6,7-trioxabicyclo(2.2.2]octanes respectively using methods described in stages (vii), (viii), (ix) and (x) of Example VIII.

4-1-Butyl-1-(4-ethynylcvcIohexyl)-26.7-trIoxabicyclof 2.2.21 octane

Method 2.

(i) Di-isopropylamine (44.7 ml) was dissolved in dry tetrahydrofuran (400ml) and cooled to -78°C under nitrogen with mechanical stirring. A solution of Q-butyllithium in hexane (1.6M, 197 ml) was added. After stirring at -78°C for 10 minutes a solution of dimethyl cyclohexane -1,4-dicarboxylate (56.6g, Lancaster) in tetrahydrofuran (200 ml) was added. After stirring for a further 30 minutes at -78°C a solution of acetyl chloride (22.5 ml) in tetrahydrofuran (200 ml) was added. The reaction mixture was allowed to warm up to room temperature over a period of 3 hours. Water was then added and the mixture extracted with ether. The ethereal extracts were washed with water, saturated sodium bicarbonate solution, dilute hydrochloric acid and brine, and then were dried over anhydrous magenesium sulphate. Evaporation under reduced pressure gave a colourless oil which was slowly distilled to yield dimethyl 1-acetylcyclohexane-l,4dicarboxylate (23.3 g, b.pt. 114-120°C at 0.4 mmHg).

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Infrared spectrum (IR) (liquid film) 1740, 1710 cm (ii) Dimethyl 1-acetylcyclohexane-l,4-dicarboxylate (23.3g) was added to a solution of concentrated hydrochloric acid (253ml) In ethanol (126ml). After refluxing for 10 hours the reaction mixture was poured into water and then extracted with dichloromethane. The organic phase was then washed with saturate sodium bicarbonate solution and brine. After drying over anhydrous magnesium sulphate the solvent was removed under reduced pressure to give methyl 4-acetylcyclohexanecarboxylate as a colourless oil. This was purified by distillation (b.pt 138-145°C at 14 mmHg).

* Infrared spectrum (IR) (liquid film) 1730, 1710 cm \

O (iii) Using the method described in Stage (ii) of Example XVIII, and starting from methyl 4-acetylcyclohexancarboxylate, methyl

O 4-(1-chloroethenyl) cyclohexanecarboxylate was prepared.

Infrared spectrum (IR) (liquid film), 1730cm (iv) Using the method described in Stage (iii) of Example XVIII, and starting from methyl 4-(l-chloroethenyl)cyclohexanecarboxylate,

4-(l-chloroethenyl)cyclohexylmethanol was prepared.

Infrared Spectrum (IR) (liquid film), 3400cm \ (v) Using the method., described in Stage (iv) . of Example XVIII, and starting from 4-(l-chloroethenyl)cyclohexylmethanol, 4-ethynylcyclohexylmethanol was prepared.

Infrared Spectrum (IR) (liquid film) 3420, 3290 cm Mass spectrum, MS, (Electron impact), M+l, 139

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-53P32 ' (vi) Using the method described in Stage (v) of Example XVIII, and starting from 4-ethynylcyclohexanemethanol, 4-ethynylcyclohexanecarboxylic acid was prepared.

Infrared Spectrum (IR) (nujol mull), 3290, 1705cm Mass spectrum, (MS), (Electron impact), M + 1, 153.

Using the method described in Example I and starting from

4-ethynyicyclohexanecarboxylic acid and 3-t-butyl-3-hydroxymethyloxetane, 4-£-butyl-1-(4-ethynylcyclohexyl)-2,6,7-trioxabicycIo[2.2.2] octane was prepared.

Using the methodelogy described in Example iV and starting from 3 - formyl - 3-Q-propyloxetane and 4-ethynylcyclohexanecarboxylic acid,

1-(4-ethynylcyclohexyl)-4-fl-propyl- 2,6,7-trioxabicyclo(2.2.2]octane-3carbonitrile was prepared.

Example X s L 0 0 0 0 dV

4-1-Butvl-1-(3,3-dimethylbut-1-vnyl)-2.6.7 -trioxabicycloί 2,2.21 octane (i) Using the method described in stage (viii) of Example VIII and starting from 4,4-dimethyl-2-pentynoyl chloride (A R Katritsky et al, J. Chem. Soc.. Perkin Trans 2. 1974, 282), and 3-£-butyl-3-hydroxymethyloxetane, (3-£-butyloxetan-3-yl)methyl 4,4-dimethylpent-2-ynoate was obtained as a solid.

Gas-liquid chromatography (glc) 0V17 at 180°C produced one peak.

(ii) Using the method described in Stage (ix) of Example VIII and starting from (3-£-butyloxetan-3-yl)methyl 4,4-dimethylpent-2-ynoate, 4-tbutyl-1-(3,3-dimethylbut-1-ynyl)-2,6,7-trioxabicyclo[2.2.2]octane was obtained as colourless crystals (m pt 204 - 206 °C)

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-54P32 . Gas-liquid chromatography (glc): 0V17 at 180° produced one peak.

Using the methodology described in Example IV and starting from 3 - formyl - 3-n-propyloxetane and 3-i-butyl-3-formyloxetane . . 1-(3,3dimethylbut -1 - ynyl) -4-q-propyl-2,6,7 - trioxabicyclo [ 2.2.2] octane 3-carbonitrile and 4-i-butyl-l-(3,3-dimethylbut-l-ynyl)-2,6,7 trioxabicyclo ( 2.2'. 2 ] octane - 3-carbonitrile were prepared.

Vb 0 0 0 0 12

Using analogous methodology £-1-(3,3-dimethylbut-l-enyl)-4-n-propyl2, 6 , 7 - trioxabicyclo ( 2 . 2 . 2 ] octane - 3-carboni tri le and trans -1 - (2 -1butylcvclopropy1)-4-n-propyl-2,6,7 -trioxabicyclo[2.2.2]octane - 3 carbonitrile were prepared from E-4,4-dimethylpent-2-enoic acid and ethyl trans - 2 -t-butylcyclopropane carboxylate (E.L.Foreman and

S.M.McElvain J .Amer, Chem, Soc. . 1940, 62, 1438 and I.A. D'yakonov et al Chem.Abs. 70:78062m respectively).

Using analogous methodology 4-t-butyl-1-(3,3-dimethylbu tyl)-2,6.7trioxabicyclo[2.2.2]octane and 1-(3,3-dimethylbutyl)-4-n-propvl2,6,7 - trioxabicyclo[2.2.2]octane-3-carbonitrile were prepared from 4,4-dimethylpentanoic acid (G.M.Whitesides et al J. Amer. Chem, Soc. 1967, 89, 1135).

Example XI

1-(Hex-5-ynyl)-4-n-propyl-2-oxa-6.7 - dithiabicyclo [2.2.21 octane (i) A stirred solution of 6-cyanohex-l-yne (4.0 g) (Synthesis: see example II, stage ii) in dry methanol (30ml) and dry diethyl ether (30 ml) was saturated with hydrogen chloride gas and the temperature was

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-55P32 maintained between -10° and 0°. The solution was diluted with drv diethyl ether (120ml) and left at -20° for 24 hours. The white crystalline solid was filtered off and dried in vacuo to give methvl iminohept-6-ynoate hydrochloride.

(ii) Dry methanol (33ml) was added to methyL iminoftept-6-ynoate hydrochloride (38.4g), under a current of dry nitrogen. Hexane (750ml) was added and the mixture was stirred at 20° for 6 hours. The mixture was allowed to stand overnight and the supernatant hexane solution was removed by decantation and evaporated in vacuo to give trimethyl orthohept-6-ynoate, a colourless oil (25.Og).

(iii) Using methodology described in European Patent 216625, and starting from trimethyl orthohept-6-ynoate and 2-hydroxymethyl-2-n-propylpropan-1,3-dithiol (synthesis also described in European Patent 216625), 1-(hex-5-ynyl)-4-g-propyl-2-oxa-6,7-dithiabicyclo]2.2.2] octane was prepared.

2-Hydroxymethyl-2-n-propylpropan-l,3-dithiol was also prepared as follows : S L 0 0 0 0 dV (i) 3-n-Propyloxetan-3-ylmethy1 methanesulphonate was prepared from

3-hvdroxymethyl-3-g-propyloxetane and methanesulphonyl chloride using methodology outlined in stage i) of Example II.

(ii) A solution of benzyl mercaptan (25.0ral) in dry dimethylformamide (100ml) was stirred at 0°C, under a current of nitrogen. Sodium hydride (6.0g., 80% dispersion in oil) was added carefully and the mixture was stirred' at 0° for 1 hour. 3-n:Propyloxetan-3-ylmethyl methanesulphonate (10.Og.) was added and the mixture was stirred at 0°C for 1 hour. The mixture was refluxed with stirring for 6 hours. The mixture was cooled and poured into water. The aqueous mixture was extracted with diethyl ether. The ethereal extracts were washed with

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-56P32 water, dried over anhydrous magnesium sulphate and evaporated in vacuo. The residue was chromatographed on silica, eluting with 1:4, diethyl ether: hexane.

2,2-Di-(benzylthiomethyl)pentan-l-ol was obtained as a pale yellow oil (15.6g.)

Mass spectrum (chemical ionisation);

M + 1 361 ci (iii)2,2-Di-(benzylthiomethyl)pentan-1-ol (8.0g.) in dry diethyl ether (150ml) was added to liquid ammonia (500ml) which was stirred under nitrogen at -70°. Sodium (8.0g.) was added in small pieces and the mixture was stirred at -70° for 3 hours. The mixture was allowed to warm to 20° and solid ammonium chloride (20g.) was added. This was followed by careful addition of methanol (100ml) to destroy excess sodium. Water (200ml) was added and the aqueous mixture was extracted with diethyl ether. The ethereal extracts were dried over anhydrous magnesium sulphate and evaporated In vacuo.

2-Hydroxymethyl - 2-n-propylpropan-1,3-dithiol was obtained as a colourless oil (4.6g.).

In an analogous manner 4-jj-butyl-l-(hex-5-ynyl)-2-oxa-6,7-dithiabicyclo[2.2.2]octane , 4-butyl-1-(hex-5-ynyl)-2-oxa-6,7-dithlabicyclo [2.2.2]octane , 4butyl-1-(hex-5-ynyl)-2-oxa-6,7-dithiabicyclo[2.2 . 2 j octane , 1-(hex-5-ynyl)-4-phenyl - 2-oxa-6,7-dlthiabicyclo[2.2.2]octane and 4-cyclopropylmethyl-1 -(hex-5-ynyl)- 2-oxa-6,7 - dithiabicyclo [ 2.2.2] octane were prepared from trimethyl orthohept-6-ynoate and 2-n-butyl2-hydroxymethylpropan-1,3-dithiol, 2-butyl - 2-hydroxymethylpropan1,3-dithiol, 2-i-butyl - 2-hydroxymethylpropan-1,3-dithiol, 2-hydroxymethyl - 2-phenylpropan-1,3-dithiol and 2 - eyelopropylmethyl- 2-hydroxyme thy lpropan- 1,3-dithiol respectively.

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Example XII

1-Hex-5 -ynyl-4-n-propyl- 2.6.7 -trithiabicyclo ί 2.2,21 octane

Method 1

Boron trifluoride etherate (0.20ml) was added to a stirred solution of

2-mereaptomethy1-2-ri-propylpropan-1,3-dithiol (0.30g) (Synthesis described in Example XXXI) and trimethyl orthohept-6-ynoate (0.30g) in dry dichloromethane (10ml) at 20°, under nitrogen. The mixture was stirred at 20° for 5 hours and triethylamine (1.0ml) was added. Water was added and the aqueous mixture was extracted with diethyl ether. . The ethereal extracts were dried over anhydrous magnesium sulphate and the solvent was removed In vacuo. The residue was chromatographed on alumina, eluting with 1:10 dichloromethane: hexane saturated with ammonia. The volatile impurity (methyl hept-6-ynoate) was removed in vacuo (130°, 10 mm Hg).

Recrystallisation of the residue from hexane gave l-(hex-5-ynyl)-4-npropyl-2,6,7-trithiabicyclo[2.2.2]octane as a colourless solid (lOmg).

AP 0 0 0 0 7 5

Method 2

A solution of trimethyl orthohept-6-ynoate (6.0g.) in dry methanol (24ml.) was stirred at 0°C, under nitrogen. 2-Mercaptomethyl-2-n-pro-pylpropan1,3-dithiol (3.0g) in dry methanol (10ml) was added and this was followed by methanol, saturated with hydrogen chloride (1.0ml). After 20 minutes stirring, at 0°C, dry triethylamine (3.0ml) was added. Water (100 ml) was then added and the mixture was extracted with diethyl ether. The ethereal extracts were dried over anhydrous magnesium sulphate and evaporated in vacuo. The residue was chromatographed on alumina, eluting with 1:10; dichloromethane : hexane saturated with ammonia. The volatile components bad original

AJR/EB/28th June 1988

-58P32 were removed in vacuo (kugelrohr at 130°, 0.5 mm Hg) . The residue was crystallised from hexane

-(Hex- 5-ynyL)-4-n-propyl-2,6,7-trithiabicyclo[2.2.2[octane was obtained as colourless crystals (0.90g.).

Using analogous methodology (Method 2) 4-ethyl-1 -(hex-5-ynyl)-2,6,7 - tri thiabicyclo[2.2.2]octane and 4-i-butyl -1-(hex-5-ynyl)- 2,6,7 -trithiabicyclo [2.2.2]octane were prepared from trimethylortho- hept-6-ynoate and 2-ethyl - 2 - me reap tome thylpropan-1,3 - di thiol and 2 -i.-butyl - 2 - me reap tome thylpropan -1,3-dithiol respectively.

«1 '3 3

Example XIII o 3

Α-Ώ-χΡγοΡ-ΥΙ-1-f 2- (prop-2-ynylthlo)ethyl 1 - 2.6.7- trloxablcyclof 2.2.2 loctane (i) A solution of 3-mercaptopropionic acid (15 ml) in dry dimethylformamide (250 ml) was stirred at 0°, under nitrogen. Sodium hydride (10.2 g; 80% dispersion in oil) was added carefully and the mixture was stirred at 40° for 1 hour. The mixture was cooled to 0°C and propargyl bromide .(60g; 80% in toluene) was .added dropwise. The mixture was stirred' at 20° for 3 hours and then at 80° for 1 hour.

The mixture was cooled and poured into water. The aqueous mixture was extracted with diethyl ether, and the extracts washed with water and dried over anhydrous magnesium sulphate. The solvent was removed in vacuo. The resulting oil (30g) (mainly prop-2-ynyl 3 -(prop - 2-ynylthio)propionate) was added to a solution of sodium hydroxide (8.0g) in water (100ml) and methanol (100ml) and the mixture was stirred at 20° for 24 hours. The mixture was extracted with diethyl ether and the aqueous solution was acidified with hydrochloric acid. The acidic

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-59P32 mixture was extracted with diethyl ether and the ethereal extracts were dried over anhydrous magnesium sulphate. The solvent was removed in vacuo . 3 - ( Prop - 2-ynylthio) propionic acid was obtained.as a red oil (12.Og) and was used without further purification.

(ii) 4-q-Propyl-1-(2-(prop-2-ynylthio)ethyl]-2,6,7-trloxablcyclof 2.2.2] octane was prepared from 3-(prop-2-ynylthio)propionic acid and

3- hydroxymethyl-3-n-propyloxetane using methodology described in

Example I.

4- £-Butyl-1-(2-(prop - 2-ynylthio)ethyl)-2,6,7-trioxabicyclo[2.2.2]oc tane was prepared from 3-(prop-2-ynylthlo)propionic acid and

3- t-butyl-3- hydroxymethyloxetane using methodology described in Example I.

4- n-Propyl -1-[2 - (prop - 2-yn 1thio)ethyl]-2,6,7-trioxabicyclo[2.2.2] octane-3-carbonitrile was prepared from 3-(prop-2-ynylthio)propionic acid and 3 - formyl - 3-Q-propyloxetane using methodology described in Example IV.

APO00075

Example XIV

4_: n-Propyl-1- (2 - (prop-2-ynvloxY)ethvll -2.6,7- tr Ioxabicyc Io [ 2.2 2 1 octane (i) 3-(Prop-2-ynyloxy)propionic acid was prepared from propargyl alcohol· and ethyl 3-bromopropionate using methodology analogous to that describing the * synthesis of 3-(but-3-yn-1-yloxy)propionic acid (Example XIX).

( i i) 4 -q-Propyl -1-(2- (prop - 2-ynyloxy) ethyl ] - 2,6,7 - tr ioxabicyclo [2.2,2]

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-60P32 octane was prepared from 3-(prop-2-ynyloxy) propionic acid and 3 - hydroxymethyl - 3-n-propyloxetane using methodology described in Example I .

4-1-Butyl-1-(2-(prop-2-ynyloxy)ethyl]-2,6,7 -trioxabicyclo[2.2.2]octane was prepared from 3-(prop-2-ynyloxy)propionic acid and 3-£-butyl-3hydroxyraethyloxe,tane using methodology described in Example I.

4-n-Propyl-1-(2-(prop-2-ynyloxy)ethyl]- 2,6,7 -trioxabicyclo[2.2.2] octane - 3-carbonitr.ile was prepared from 3 - (prop - 2-ynyloxy) prop ionic acid and 3 - formyl-3-n-propyloxetane using methodology described in Example IV.

TS Example XV

O’

1-(But-3-ynyloxymethyl)- 4-n-propyl-2.6.7 -trioxabicyclof 2.2.21 octane £

*is (i) 2-(But-3-ynyloxy)acetic acid was prepared from but-3-yn-1-ol and ethyl bromoacetate using methodology analogous to that describing the synthesis of 3-(but - 3-ynyloxy)propionic acid (Example XIX).

(ii) 1 -(But-3-ynyloxymethyl)-4-n-propyl-2,6,7-trioxabicyclo[2.2.2]octane was prepared from 2-(but-3-ynyloxy)acetic acid and 3-hydroxymethyl 3-n-propyl-oxetane using methodology described in Example I

-.t-Butyl-1- (but - 3-ynyloxymethyl) - 2,6,7 - trioxabicyclo[ 2.2.2] octane was prepared from 2-(but-3-ynyloxy)acetic acid and 3-£-butyl-3-hydroxymethyloxetane using methodology decribed in Example I

-(But-3-ynyloxymethyl)-4-fl-propyl -2,6,7 -trioxabicyclo[2.2.2]

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-61P32 octane - 3-carbonitrile was prepared from 2-(but-3-ynyloxy)acetic acid and 3 - formyl - 3-rj-propyl - oxetane using methodology described in Example IV

Example ZVI

4-1- Butyl -1 -(hept- 6-ynyl)- 2.6.7 -trioxabicyclo Γ 2.2,21 octane (i) Sodium (1.2g) was dissolved In dry ethanol (200ml). Diethyl malonate (7.8ml) was added and the mixture was stirred for 30 minutes and hex-5-ynyl methanesulphonate (9.0g) was added. The mixture was stirred and refluxed for 1 hour. The mixture was cooled and the volume was reduced in vacuo. The mixture was poured into water and the aqueous mixture was extracted with diethyl ether. The ethereal extracts were washed with water and dried over anhydrous magnesium sulphate. 'The solvent was removed In vacuo. The crude ester was added to a solution of aqueous sodium hydroxide solution (100ml of 15% solution) and methanol (50ml) and the mixture was stirred at 20° for 24 hours. The mixture was extracted with diethyl ether. The aqueous alkaline phase was acidified with hydrochloric acid and the mixture was extracted with diethyl ether. The ethereal extracts were dried over anhydrous magnesium sulphate. The solvent was removed in vacuo.

2-(Hex-5-ynyl)malonic acid was obtained as a colourless solid (4.5g) and was used without further purification.

(ii) A mixture of 2-(hex-5-ynyl)malonic acid (2.2g) and cuprous oxide (60mg) in dry acetonitrile (40ml) was stirred and refluxed, under nitrogen, for 6 hours. The solvent was removed in vacuo. 5% Aqueous hydrochloric acid was added and the aqueous mixture was extracted with diethyl ether, The ethereal extracts were dried over anhydrous magnesium sulphate and the solvent was removed in vacuo. 0ct-7-ynoic

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-62P32 ac id was obtained as an oil (1.5g) and was used without further pur i f ica tion.

( iii) 4-1-Butyl -1-(hept-6 -ynyl)-2,6,7 -trloxabicyclo[2.2.2]octane was prepared from oct-7-ynoic acid and 3-£-butyl-3-hydroxymethyloxetane using methodology described In Example 1.

- (Hept-6-ynyl)-4-n-propyl-2,6,7-trIoxablcyclo[2.2.2]octane was prepared from oct-7-ynoic acid and 3-hydroxymethyl-3-n-propyloxetane using methodology described in Example I.

Example XVII

Ο 1 - (Hex - 5-ynyl)-4-(prop-2-enyl)-2,6.7 -trioxablcyclo(2,2,21 octane - 3 ·*, carbonitrile

J3 (i) Pent-4-enal was prepared from pent-4-en-l-ol (supplied by Aldrich) as described in Example IV, stage (i).

(ii) 2-Hydroxymethyl-2-(prop-2-enyl)propan-1,3-diol was prepared from pent-4-enal as described in Example I, stage (i)

- Formyl-3-(prop-2-enyl)oxetane was prepared from 2-hydroxymethyl - 2(prop-2-enyl)propan-l,3-diol as described In Examples I and IV,

- (Hex-5-ynyl)-4-(prop - 2 - enyl)-2,6,7-trioxablcyclo[2.2.2]octane - 3 carbonitrile was prepared from hept-6-ynoic acid and 3-formyl-3(prop-2-enyl)oxetane as described in Example IV.

In an analogous manner, starting from 2-(but-3-ynyloxy)acetic acid (Example XV) and 3 - formyl-3-(prop-2-enyl)oxetane, 1-(but-3-ynyloxymethyl)-4 -(prop-2 - enyl) - 2,6,7 - trloxabicyclo[2.2.2]octane - 3-carbo nitrile was prepared.

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In an analogous manner, starting from hex - 3-en-1 - ol (supplied by Aldrich), 4 -(but-3 -enyl) -1 -(hex-5-ynyl)-2,6,7-trioxabicycΙο Γ 2.2 . 2’ octane-3-carbonitrile was prepared.

The triol obtained from 2-(but-3-enyl) - 2-hydroxymethylpropan-1,3 - diol triacetate by transesterification using sodium methoxide in methanol contained impurities and was purified as follows :A mixture of crude 2-(but-3-enyl)-2-hydroxymethylpropan-1,3 - diol (4.5g), acetone (30ml) and p-toluenesulphonic acid (0.25g) was refluxed in a Dean and Stark apparatus for 7 hours. The mixture was cooled and washed with aqueous sodium hydrogen carbonate solution. The organic solution was dried over anhydrous magnesium sulphate and the solvent was removed in vacuo. The residue was chromatographed on silica, eluting with 1:4 diethyl ether: hexane. 5-(But-3-enyl)2,2-dimethyl-5-hydroxymethyl-1,3-dtoxane was obtained as a colourless oil (l.Og).

Mass Spectrum (Chemical Ionisation):

M + 1 201

5-(But-3-enyl)-2,2-dimethyl-5-hydroxymethyl-1,3-dioxane (0.80g) and Amberlyst 15 (0.50 g) in methanol (100 ml) containing water (1.0ml) was refluxed, with stirring, for 6 hours. The mixture was filtered and the filtrates were evaporated in vacuo

2- (But-3-enyl)-2-hydroxymethylpropan-1,3-diol was obtained as a colourless oil (0.6g) which solidified on standing.

3- (But-3-enyl)-3-formyloxetane was prepared from 2(but-3-enyl)2-hydroxymethylpropan-1,3-diol as described in Examples I and IV.

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- (But - 3 -enyl) -1 -(hex - 5 -ynyl)-2,6,7-trioxabicyclo[2.2.2]octane-3carboni.trlie was prepared from hept-6-ynoic acid and 3-(but-3-enyl) 3-formyloxetane as described in Example IV.

Example XVIII

6-t-Butyl-1 -(4-methvlhex-5-ynvl)-2.6.7-trloxablcyclof 2.2.21 octane (i) A mixture of diethyl 2-acetyl - 2-methylhexane-1,6-dioate (16.Og), (Chem. Ber. 1980, 113. 451), hydrochloric acid (lOQml) and ethanol was refluxed for 4 hours. The mixture was cooled, diluted with water and

Ί4 basified with sodium hydrogen carbonate solution. The aqueous mixture '’i was extracted with diethyl ether. The ethereal extracts were washed with water, dried over anhydrous magnesium sulphate and evaporated in vacuo.

.6 ζ*2 Ethyl 5-methyl-6-oxoheptanoate was obtained as a colourless oil (7.3g) and was used without further purification.

The aqueous alkaline extracts obtained above were acidified with hydrochloric acid and the aqueous mixture was extracted with diethyl ether. The ethereal extracts were dried over anhydrous magnesium sulphate and the solvent was removed in vacuo.

5-Methyl-6-oxoheptanoic acid was obtained as a yellow oil (8.5 g).

(ii) A mixture of phosphorous pentachloride (3.0g), dry pyridine (6.0ml) and benzene (30ml) was stirred at 25°, under nitrogen. Ethyl

5-methyl-6-oxoheptanoate (l.Og) in benzene (3.0ml) was added and the mixture was refluxed with stirring for 3 hours. The mixture was cooled and poured into ice and water. The aqueous mixture was extracted with diethyl ether. The ethereal extracts were washed with

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N hydrochloric acid, sodium hydrogen carbonate solution and finally •water. The ethereal extracts were dried over anhydrous magnesium sulphate and evaporated In vacuo. The resulting oil (800 mg) consisted of ethyl 6 - chloro - 5-methylhept-6-enoate ( 70%) and ethyl

6-chloro-5-methylhept-5-enoate ( 30%) and was used without further purification.

Mass Spectrum (Chemical Ionisation):

In combination with Gas-liquid chromatography. Two components were observed (ratio 2:1)

M+l for both components 205.

(iii) A mixture of lithium aluminium hydride (1.2 g) in dry diethyl ether (100ml) was stirred at 0°, under nitrogen. The mixture of ethyl

6-chloro-5-methylhept-6-enoate and ethyl 6-chloro-5-methylhept-5 enoate (4.0g) in dry diethyl ether (20ml) was added and the mixture was stirred under nitrogen for 2 hours. Aqueous sodium hydroxide solution (10ml, 10%) was added carefully. The supernatant ether solution was removed by decantation and the residue was washed with diethyl ether (2 x 50ml). The combined ethereal extracts were dried over anhydrous magnesium sulphate and evaporated in vacuo. The resulting oil (3.5g) consisted of 6-chloro-5-methylhept-6-en-l-ol (50%) and the £ and 2 Isomers of 6-chloro-5-methylhept-5-en-l-ol (50%) and was used without further purification.

(iv) The mixture of 6-chloro-5-methylhept-6-en-l-ol and E and Z isomers of 6-chloro - 5-methylhept-5-en-1-ol (2.8g) was stirred in dry tetrahydrofuran (50ml) at 0°, under nitrogen. π-Butyllithium (43ml of 1.6M solution in hexane) was added and the mixture was stirred at 20° for 4 hours. Ice was added and the aqueous mixture was extracted with diethyl ether. The ethereal extracts were washed with water and dried

APO00075

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P32

Vb ft ft * * ' over anhydrous magnesium sulphate. The solvent was removed in vacuo and the resulting oil was chromatographed on silica, eluting with 2.5 diethyl ether: hexane.

5-Methylhept-6-yn-1-ol was obtained as a colourless oil (1.2g)

Gas-liquid chromatography (glc): 0V17 at 120° produced one peak.

Mass spectrum (Chemical Ionisation)

Gaseous ammonia as ionising gas M -t- 18 144 (v) A solution of 5-methylhept-6-yn-l-ol (l.Og) in dry dimethylformamide (9.0ml) was stirred at 20° and pyridiniura dicjiromate (10.5g) was added carefully. The mixture was stirred at 20^ for 24 hours. Diethyl ether (50ml) was added and the supernatant liquid was removed by decantation. The residue was washed with further portions of diethyl ether (10 x 50ml). The ethereal extracts were washed with 0.5 N hydrochloric acid solution and then water. The ethereal extracts were dried over anhydrous magnesium sulphate and the solvent removed in vacuo .

5-Methylhept-6-ynoic acid was obtained as a light brown oil (0.80g) and was used without further purification.

(vi) 4-1-Butyl-1-(4-methylhex-5-ynyl)-2,6,7-trioxabicyclo[2.2.2]octane was prepared from 5-methylhept-6-ynoic acid and 3-£-butyl-3-hydroxy methyl oxetane as described in Example I.

-(4-Methylhex-5-ynyl)-4-fl-propyl- 2,6,7 -trioxabicyclo[2.2.2]octane 3-carbonitrile was prepared from 5-methylhept-6-ynoic acid and 3-formyl-3-n-propyloxetane using methodology described in Example IV.

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Example XIX

- (2 - ( But·3 -vnyloxy)ethyli- 9 -propy1 - 2,6,7 -trioxabicyclo:2.2.21oc tane (i) Sodium hydride (9.6g of 60% dispersion in mineral oil) was added to a stirred solution of but-3-yn-l-ol (16.2g, 0.23 mol, Lancaster) in dry toluene (200 ml). After stirring for 2 hours at 25°C a solution of ethyl 3-bromopropionate (20.8g, 0.115 mol, Lancaster) was added. The reaction mixture was stirred and refluxed for 7 hours. Ethyl 3-(but-3-ynyloxy)propionate (17.8g) was obtained by quenching the cooled reaction mixture in water, extracting with ether, washing with brine, drying over anhydrous magnesium sulphate followed bv evaporation .

(ii) Ethyl 3-(but-3-ynyloxy)propionate (17.9g) was stirred overnight with a solution of sodium hydroxide (150ral, 2M). After extracting with ether the aqueous layer was acidified with concentrated hydrochloric acid. The required acid was obtained by ether extraction. The organic phase was washed with brine and dried over magnesium sulphate. Evaporation gave 3-(but-3-ynyloxy)propionic acid (8.8g) as a colourless oil.

1-(2-(But-3-ynyloxy)ethyl]-9-n-propyl-2,6,7 -trioxabicyclo[2.2.2]octane was prepared from 3-(but-3-ynvloxy)proplonic acid and 3-hydroxymethvl3-n-propyloxetane using the methodology outlined in Example I.

Using the above methodology and starting from ethyl 2-bromopropionate (supplied by Lancaster Synthesis) and but - 3-yn-1-ol (supplied by Lancaster Synthesis), 1 -[1 -(But-3-ynyloxy)ethyl]-9-n-propyl-2,6,7 trioxabicyclo[2.2.2]octane was prepared.

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E :·: ample XX

- · ' · Me thoxyhept- 5 -ynv I) - 9 -n - p ropy 1 - 2,6,7 -tr ioxabicyclo ί 2.2.21 octane ii) A mixture of 7 - chloro -1-mechoxyhept-2-yne (8.0g) (J. Martell and E. Toromanoff Chem Abs. 76: 247l2d) and sodium cyanide (5.0g) in dimethylformamide (20ml) and water (20ml) was stirred at 80° for 7 hours. The mixture was cooled and diluted with water. The aqueous mixture was extracted with diethyl ether. The ethereal extracts were washed with water, dried over anhydrous magnesium sulphate and evaporated in vacuo .

7-Cyano-1 - methoxyhept-2-yne was obtained as a vellow oil (6.0g).

•-2F

-O

O >

Mass spectrum (Chemical Ionisation):

M + 1 152

I ii4 A mixture of 7-cyano-1-methoxvhept-2-yne (6.0g) and aqueous sodium hydroxide solution (100ml, 2N) was refluxed, with stirring for 16 hours. The mixture was cooled and extracted with diethyl ether. The aqueous alkaline solution was acidified with hydrochloric acid and the aqueous mixture was extracted with diethyl ether. The ethereal extracts were dried over anhydrous magnesium sulphate and evaporated in vacuo .

8-Methoxyoct-6-ynoic acid was obtained as colourless oil (6.0g).

1-(7 -Methoxyhept- 5-ynyl)-4-n-propyl-2,6,7-trioxabicyclo[2.2.2] octane was prepared from 8 - methoxyoct-6-ynoic acid and 3-hydroxymethyl - 3-n-propyloxetane using the methodology described in Example 1.

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Example XXI t-1-ButyI - (7-me thoxyhep t- 5 -vny1) - 2.6.7 -trioxab icyclo ί 2.2.2 ί octane (1) Methyl 5-bromopentanimidate hydrochloride (m.p. 89°) was prepared from

5-bromovaleronitrile using methodology described in stage (i) of Example XI.

(ii) Trimethyl 5-bromoorthopentanoate (colourless liquid, b.p. 108-110°, 16mm Hg) was prepared from methyl 5-bromopentanimidate hydrochloride as described in stage (ii) of Example XI.

(iii) 1-(4- Bromobutyl'! -4 -1- butyl-2,6,7-trioxab icy clo( 2.2.2]octane (m.p.

111-5°) was prepared from trimethyl 5-bromoorthopentanoate and

2-t-buty1-2-hydroxymethylpropan-1,3 - diol using the methodology described in Method 2 of Example VI.

Mass spectrum (Chemical Ionisation)

M+l 307 309 (iv) Sodium (O.lg) was added to a stirred solution of anhydrous liquid ammonia (70ml) and dry diethyl ether (20ml), under nitrogen, at -70°. After 10 minutes a crystal of ferric nitrate (15 mg) was added to the dark blue solution. The reaction mixture, which had turned grey was allowed to warm up to -30° and a further quantity of sodium (0.75g), in small pieces, was added. The mixture was stirred for 30 minutes at -30° and methyl propargyl ether (2.2 g) was added. The mixture was stirred for a further hour at -30° and l-(4-bromobutyl)-4-t.-butyl2,6,7 - trioxabicyclo[2.2.2]octane (l.Og) in dry diethyl ether (50ml) was added. The mixture was stirred at -30° for 1 hour. Solid ammonium chloride (1.7g) and then methanol (5ml) were added and the mixture was allowed to warm to room temperature. Water (20ml) was

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- 70P32 added and the aqueous mixture was extracted with diethyl ether. The ethereal extracts were dried over anhydrous magnesium sulphate and evaporated in vacuo. The residue was chromatographed on alumina, eluting with 1:9 dichloromethane: hexane, saturated with ammonia.

-1- Butyl - (7-methoxyhept- 5-ynyl) - 2,6,7 -trioxabicyclo[2.2.2]octane was obtained as a colourless solid (m.p, 47-49°, recrystallised from hexane).

Example XXII

But - 3 -ynyl 4 -n-propyl -2,6,7-trioxabicyclof2.2.21octane-1-carboxylate (i) Oxalyl chloride (4.3ml) was added to a stirred solution of but - 3-yn-1 -ol (3.5g) in dry dichloromethane (75ml), at 0°. The solution was stirred at 0° for 30 minutes and was then added, dropwise to a stirred soLution of 3-hydroxymethyl-3-n-propyloxetane (6.4g) and dry pyridine (30ml) in dry dlchloromethane (75 ml). The mixture was stirred at 20° for 24 hours. Water was added and the aqueous mixture was extracted with diethyl ether. The ethereal extracts were washed with 5% hydrochloric acid solution, saturated sodium hydrogen carbonate solution and finally water. The ethereal extracts were dried over anhydrous magnesium sulphate and evaporated in vacuo. The resulting oil was chromatographed on silica (pre-eluted with 1% triethylamine in hexane), and eluting with 1:1 diethyl ether: hexane. But-3-ynyl (3-n-propyloxetan-3-yl) methyl oxalate was obtained as a colourless oil (7,0g).

(i i) But - 3-ynyl 4-n-propyl-2,6,7-trioxabicyclo[2.2.2]octane -1-carboxylate was prepared from but-3-ynyl (3-jj-propyloxetan-3-yl)methyl oxalate using the methodology described in Example I.

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Ε xj 2Γ i e XX111

5' · (Prop - 2 -ynyl)-4-n- propyl - 2.6.7 - trioxabicyclo[2,2.21 octane -1 - carboxamide (i) Ethyl 4-n-propyl - 2,6,7-trioxabicyclo[2.2.2]octane -1-carboxylate was prepared from 3-hydroxymethyl-3-n-propyloxetane and ethyl oxalyl chloride (supplied by Aldrich) using methodology described in Example

I. (colourless solid m.p. 70°)

Mass spectrum (Chemical Ionisation)

M + 1 231 (ii) A solution of ethyl 4-a-propyl-2,6,7-trioxabicvclo[2,2,2 Joctane-1 carboxylate (0.12g) and 2-propynylamine (0.5ml) and methanol (20ml) was allowed to stand at 20° for 4 days. The solution was evaporated in vacuo. The residue was chromatographed on alumina, eluting with 2:3 dichloromethane: hexane, saturated with ammonia.

M- (Prop - 2-ynyl)-4-n-propyl - 2,6,7-trioxabicyclo[2.2.2]octane-lcarboxaraide was obtained as a pale yellow solid (0.12g).

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Example XXIV

Prop - 2 - ynyl 2-(4-n-propyl - 2,6,7 -trioxabicyclo f 2.2.21oct-1-ylI acetate

(. i ) Ethyl 2 - ( 4-n-propyl - 2,6,7 - tr loxabicyclo [ 2.2.2 ] oc t -1 -yl) ace tate was prepared from ethyl malonyl chloride and 3-hydroxymethyl-3-n-propvloxetane using methodology as described in Example 1.

(ii) A mixture of ethyl 2-{4-n-propyl-2,6,7-trioxabicyclo[2.2.2 Joct-1-v1) bad original

AJP./EB/28th June 1988

P32 acetate (0.48g) and sodium hydroxide (O.35g) in methanol (10ml) and water (2.0ml) was stirred at 20° for 3 hours. Solid carbon dioxide pellets ( lOg) were added and the mixture was evaporated to drvness. The crude sodium 2 -1 4-n-propy1 - 2,6,7-trioxabicyclo[2.2.2]oct-1-v1) acetate was used without further purification.

(iii) A mixture of sodium 2 - (4-rj-propyl - 2,6,7 - tr ioxabicyclo (2.2.2 ] oc t l-yl)acetate (l.Og) and propargyl bromide (1.8ml of 80% solution in toluene, supplied by Aldrich) in dry dime thylforraamide (30ml) was stirred at 20° for 24 hours. Water was added and the aqueous mixture was extracted with diethyl ether. The ethereal extracts were washed with water and dried over anhydrous magnesium sulphate. The solvent was removed in vacuo and the residue was chromatographed on silica (pre-eluted with 1:3 dichloromethane: hexane containing 3% triethylamine) and eluting with 1:3 dichloromethane: hexane containing 3% ' 1. 1 triethylamine.

O Prop - 2-ynyl 2 - (4-n-propyl-2,6,7 -trioxabicyclo[2.2.2]oct-1-yl)acetate was obtained as a colourless solid (0.45 g).

>

Example XXV

- (But - 3 -yny1thiomethyl)4·n-propyl - 2,6,7 -trIoxabieyelo f 2.2,21 octane (i) But-3-ynyl rnethanesulphonate was prepared from but - 3-yn-1-ol using the method described in stage (i) of Example 1 ( i i) 2 - ( But-3-vnylthio)ace tic acid; Method A

Thioglycollic acid (6.0g) was added to a stirred solution of sodium hydroxide (8.0g) in ethanol (50ml). But-3-ynyl rnethanesulphonate

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-73P32 (7.4g) was added and the mixture was stirred at 20° for 24 hours. The reaction mixture was poured into water and the aqueous mixture was extracted with diethyL ether. The aqueous aLkaline extracts were acidified with hydrochloric acid and the mixture was extracted with diethyl ether. The ethereal extracts were dried over anhydrous magnesium sulphate and evaporated in vacuo. The resulting oil was stirred in dry dimethylformamide (100ml) and anhydrous sodium carbonate (15g) was added. Methyl iodide (7.0ml) was added and the reaction mixture was stirred at 20° for 3 days. Water was added and the aqueous mixture was extracted with diethyL ether. The ethereal extracts were washed with water and dried over anhydrous magnesium sulphate. The solvent was removed in vacuo and the residue was chromatographed on silica, eluting with 1:4 diethylether: hexane. Methyl 2-(but-3-ynylthio)acetate was obtained as a colourless oil (1.2g) (a small amount of methyl 2-(but-3-yn-l-ylthio)propionate was present). A mixture of methyl 2-(but-3-ynylthio)acetate (0.6g) and sodium hydroxide solution (20ml, 2N, 1:1 methanol:water) was stirred for 24 hours at 20°. Water was added and the aqueous mixture was extracted with diethyl ether. The aqueous aLkaline extracts were acidified with hydrochloric acid and the mixture was extracted with diethyl ether. The ethereal extracts were dried over anhydrous magnesium sulphate and the solvent was removed in vacuo. 2-(But-3ynvlthio)acetic acid was obtained as a colourless oil (0.5g). (A small amount of 2 -(but - 3-ynylthio)propionic acid was present.

2-(But-3-vn-l-ylthio)acetic acid:- Method B

2-(But-3-ynylthio)acetic acid was prepared from thioglycollic acid and but-3-ynyl methanesulphonate using the methodology described in stage (i) of Example XIII.

(iii) 1 -(But - 3-ynylthiomethyl)-4-n-propyl-2,6,7 -trioxabicyclo(2.2.2]

S L 0 0 0 0 dV

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P32 octane was prepared from 2 -(but-3-ynvlthic) ace tic ac-'d and i - hydroxyme tby 1 - 3 - n-p ropy 1 -oxe tane using the methodology described it: Examp I e I .

4-1-Butyl -1 -(but- 3-yny1thiomethyl) - 2,6,7-trioxabicyclo[2.2.2]octane was prepared from 2 -(but-3-ynylthlo)acetic acid and 3-t-butyl-3hydroxymethyloxetane using the methodology described in Example I. A small· amount of 4-r.-butyl-l-[l-(but-3-yn-l-ylthio)ethvl]-2,6.7trioxabicyclof2.2.2joctane was also present.

Example XXVI

N- , Prop - 2-yny1) -2 -(4-n-propyl - 2,6.7 -trioxabicyclo F 2.2.2oct-1-yl)acetamidc

To a stirred solution of ethyl 2-(4-q-propyl-2,6,7-trioxabicyclo[2.2.2]oct-L-yl)acetate (300mg) (Example XXIV) in methanol (5ml) was added 2-propynylamine (2.0ml), followed by sodium cyanide (20mg). The mixture was stirred at 70-80° for 12 hours. Water (10ml) was added and the mixture extracted with ethyl acetate. The ethyl acetate extracts were dried over anhydrous magnesium sulphate and evaporated in vacuo. The residue was purified by chromatography on silica using gradient elution with e~hvl acetate : hexane mixtures containing triethylamine (1%).

N-( Prop-2-yny1)-2-(4-n-propy1-2,6,7-trioxabicyclo[2.2.2]oct-l-yl)acetamide was obtained as a yellowish oil (122 mg).

Gas liquid chromatography (g.l.c.): 0V17 at 245° produced one peak.

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- / J F32

Example .«'-'LI

1- :. I - Me thvlhex - 5 - yny 1) - 4- propyl-2.6, 7-trioxabicyclof 2. 2 . 2 [octane

i) Using exactly the same method as described in Example II stage (i), pent-4-ynyl· methanesulphonate (37.8g) was prepared from methanesulphonyl chloride (22ml), triethylamine (44 ml? and pent-4-yn-l-ol (Lancaster synthesis, 20g).

ii) A solution of diethyl methylmalonate (Aldrich Chemical Company, 35.6ml) in dry tetrahydrofuran (200ml) was added, dropwise, to a stirred suspension of sodium hydride (60% dispersion in mineral oil.

^Q.lg) in tetrahydrofuran (50ml) under nitrogen. After the addition was complete, the mixture was heated to gentle reflux for 1 hour and then allowed to cool before a solution of pent-4-ynyl methanesulphonate (35,2g) in tetrahydrofuran (50ml) was added. The resulting mixture was heated to gentle reflux for a further 2 hours . The bulk of the solvent was then removed in vacuo and the residue was partitioned between diethyl ether and water. The organic phase was separated and washed with water and brine before drying over anhydrous magnesium sulphate and evaporation under reduced pressure. Distillation gave diethyl 2-methyl-2-(pent-4-ynyL)malonate (45.8g) as a colourless oil (b.p. 92-97°, 0.5mra Hg).

Gas liquid chromatography (g.l.c) : OV-17 programmed from 120° to 210° produced one peak.

iii) A mixture of diethyl 2-methyl-2-(pent-4-ynyl)malonate (Hg) and potassium hydroxide (I5g) in 95% ethanol (150 ml) was heated to reflux for 4 hours and then stood at room temperature for 15 hours. The bulk of the solvent was removed in vacuo and the residue was taken up in water. The resulting aqueous phase was washed with dichloromethane before acidification to pH 1 with concentrated hydrochloric acid and

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- 76P32 further extraction with fresh dichloromethane. These organic ex“n-.ct? w.-re washed with brine before drying over anhvdrous magnesium sulphate and evaporation in vacuo . 2-Methyl-2-(pent-4-ynyl'malonic acid was obtained as a pale yellow solid (6.7g).

iv) A mixture of 2-methyl-2-(pent-4-ynyl)malonic acid (5.7g) and cuprous oxide (O.22g) in acetonitrile (L50 ml) was heated to reflux, under a nitrogen atmosphere, for 4.25 hours. The solvent, was removed under reduced pressure and water (50 ml) was added to the residue followed hv sufficient concentrated hydrochloric acid to hydrolyse the copper salts. The resulting aqueous phase was extracted with diethvl ether and the organic extracts were washed with water and brine before drying over anhydrous magnesium sulphate and evaporation in vacuo.

'.U

O

2-Methylhept-6-ynoic acid (3.6g) was obtained as a colourless oil after distillation (b.p. 150-165°, 0.5mm Hg).

Using the methodology described in stages (v) and (vi) of Example 1. 1 - (1-methylhex-5-ynyl)-4-propyl-2,6,7-trioxabicyclo[2.2.2]octane was prepared from 2-methylhept-6-ynoic acid and 3-hydroxymethyl- 3-n-propvl oxe tane.

Gas-liquid chromatography(g.1.c.): OV-17 at 200° produced one peak.

In an analogous manner the following compound was also prepared

4-t-Buty1-1-(1-methylhex-5-ynyl)-2,6,7-trioxabicyclo[2.2.2]octane.

Using methodology outlined in Example IV l-(l-methylhex-5-ynyi)-4n-propyl-2,6,7-trioxabicyclo[2.2.2]octane-3-carbonitrile was prepared.

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- 77Example Χ-Χ'/ΙΙΙ

Methyl 7 · (4-n -propyl - 2.6,7- crioxabicyclof 2 . 2.2 1 oct-1 - y 1 )hept -2 - vnoa te

i) n-Butyllithium (5.2ml, 1.6M solution in hexane) was added to a solution of hept-6-ynoic acid (0.5g) in dry tetrahydrofuran (20ml) stirred at -70° under nitrogen. The resulting mixture was maintained at -70° for 0.25 hour when methyl chloroformate (0.32ml) was added neat. The solution was stirred at -70° for a further 0.5 hour and then allowed to warm to room temperature over 0.5 hour. After this time, water (5ml) was added and the bulk of the solvent was removed under reduced pressure. The residue was diluted with water and extracted with diethyl ether. The aqueous phase was separated, acidified to pH 1 with concentrated hydrochloric acid and then re-extracted with dichloromethane. The combined dichloromethane extracts were washed with brine before drying over anhydrous magnesium sulphate and evaporation in vacuo. The residue was purified bv distillation (bulb - to-bulb, 0.5 mm Hg) . At oven temperature 220°

1-methyl hydrogen 1,8-oct-2-vndioate distilled as a brown oil (183mg).

Mass spectrum (Probe) (Chemical Ionisation)

M+l 185 ii) Using the methodology described in stages (v) and (vi) of Example L. methyl 7-(4-propyl- 2,6,7 -trioxabicyclo[2.2.2 joc t-1-yl)hept-2 -ynoate was prepared from 1-raethyl hydrogen 1,8-oct-2-vndioate and 3-hvdroxvmethyl- 3-n-propyloxetane.

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- 78 P ) e XXIX

- (Hex - 3 - yny 1- 3 - met hy 1 - 4 - n - propyl - 2 - oxa - 6.7 - dithiabicyc lo f 2 . 2.2 1 oc tane “X»

O o

ς* o

J3 >

1' A solution of 2,2-di-(benzylthiomethyl)pentan-1-ol (1.Og Example XI’ in dry dichloromethane (10 ml) was added to a stirred suspension of pyridinium chlorochromate (1.8g) and anhydrous sodium acetate (O.llg) in dry dichloromethane (25 ml) at 0°C, under a current of nitrogen. The reaction mixture was allowed to warm to 20°C and then stirred for 2 hours. Dry diethyl ether was added and the mixture stirred for 30 minutes. The ethereal extracts were decanted off and the residue was washed with further portions of diethvL ether. The combined ethereal extracts were dried over anhydrous magnesium sulphate and the solvent «as removed in vacuo. The residue was purified by chromatography on a mixture of silica and charcoal, eluting with diethyl ether. 2,2-Di(benzvlthiomethyl)pentanal was obtained as a paLe yellow oi 1 <0.2 · .

Mass spectrum (Chemical Ionisation)

359 ii.) A solution of 2,2 - di - (benzyl thiomethyl) pentanal (3.54g) in dry diethvl ether was added dropwise to a stirred solution of methyl magnesium iodide [prepared from methyl iodide (1.2ml) and magnesium (0.48g)’ in dry diethyl ether (60 ml). The reaction mixture was refluxed for 2 hours and then cooled. Saturated aqueous ammonium chloride solution was added. The mixture was stirred for 30 minutes and extracted with diethyl ether. The ethereal extracts were dried over anhydrous magnesium sulphate and the solvent was removed in vacuo.

3.3 - Di-(benzylthiomethyl)hexan-2-ol was obtained as a yellow oil <L.7g)

Mass Spectrum (Chemical Ionisation)

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-79P32

73 ί - ( Ηρχ - 5 - νηνί ? - 3 - me thyI - 4 -q-propyl- 2-oxa - 6,7 - di th iab icy c lo [ 2 2 . .· ( octane we- prepared from 3,3-di-(benzy1thiomethy 1)hexan-2 - ο 1 usin,; methodology described in Example XI.

Example XXX

- (2-MethyIhex- 5-ynyl·) -4-n-propyl-2,6,7 -trioxabicyclo f 2.2.2 1 octane - 3-carbonitrile

i) 1,4-Dimethylcyclohex-1-ene (12g) (ref. Beilstein 5, 74) was dissolved in dry dichloromethane (120 ml) and the solution stirred at -70°. A current of ozone was passed through the solution for 3 hours. The solution was allowed to warm slightly and poured into a solution of hydrogen peroxide in water (600ml of 3% solution). The dichloromethane was removed in vacuo and the mixture was stirred vigorously at 20° for 48 hours. The mixture was basified with saturated sodium hydrogen carbonate solution and the aqueous mixture was extracted with diethyl ether. The aqueous solution was acidified with 10% hydrochloric acid solution and the mixture was extracted with diethyl ether. After drying over anhydrous magnesium sulphate both ethereal extracts were evaporated in vacuo. Both residues contained organic acid and aldehyde. The combined residues (3.5g) were stirred in dry dimethylformamide (30ml) and pyridiniura dichromate (17.4g) was added. The mixture was stirred at 20° for 24 hours and then diluted with diethyl ether (50ml). The ethereal extracts were decanted off and the black residue was washed repeatedly with more diethyl ether. The combined ethereal extracts were washed with dilute hydrochloric acid solution, water, and dried over anhydrous magnesium sulphate. The solvent was removed in vacuo and 3-methyl-6-oxoheptanoic acid was obtained as a yellow oil (2.45g).

bad original

AP 0 0 0 0 7 5

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-80Mass spectrum (Chemical Ionisation)

M 4 1 150 ii) 3-Methy1 - 6-oxoheptanoic acid (2.45g) was stirred in dry dimethylformamide (60ml) _fat 20°C and anhydrous sodium carbonate (1.64g) was added. Ethyl iodide (5.Aral) was added dropwise and the mixture was refluxed with stirring for 2 hours. The mixture was cooled, poured into water and the aqueous mixture was extracted with diethyl ether. The ethereal extracts were washed with saturated aqueous sodium thiosulphate solution, water. and dried over anhydrous magnesium sulphate. The solvent was removed in vacuo and the residue was purified by chromatography on silica, eluting with 1:6 diethyl ether : hexane. Ethyl 3 - methyl-6-oxoheptanoate was obtained as an orange oil (2.0g) :$

Mass spectrum (Chmeical Ionisation)

M + 1 187 iii) Using methodology described in Example XVIII, 3-methyIhept-6-vnoic acid was prepared from ethyl 3 - methyl-6-oxoheptanoate.

( iv) 1-(2-Methylhex-5-yny1)-6-n-propyl-2,6,7-trioxabicyclo[2.2.2]octane - 3 carbonitrile was prepared from 3-methylhept-6-ynoic acid using methodology described in Example IV.

Starting from 3-methylhept-6-ynoic acid and 3-formy1-3-(prop - 2-eny1) oxetane (see Example XVII) and using methodology described in Example IV , 1 - (2-me thylhex-5 -ynyl)-4-(prop-2-enyl)-2,6,7 -trioxabicyclo[ 2.2.2] octane - 3-carbon)trile was prepared.

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-81P3 2

XXXJ.

i- . But - ) -vny1oxymethv1) - 4 -n- propyl - 2.6,~-tri thiab icyc1 ο I 2.2.21oc tane

1) Methanesulphonyl chloride (74.Og) was added dropwise over 30 minutes to a solution of 2-hydroxymethyl-2-n-propylpropan-1.3-dio1 (28.Og) in dry pyridine (200ml) under nitrogen at 0°C. The mixture was allowed to warm to room temperature. After stirring for 18 hours the mixture was poured into water (200ml) and extracted with chloroform (2x200ml). The chloroform extracts were washed with water (2 x 100ml). dried over anhydrous magnesium sulphate and evaporated in vacjio to give a brown solid. This was stirred in dry diethyl ether (200ml) to giv-·· 2 - hydro;<vme thvl - 2 - n - propv lpropan -1 . 3 - diol tr imethanesulphonate as a white solid. (70.Og ) (m.pt.103.6°).

ii) Sodium trithiocarbonate (18.Og) [see J .Org.Chem. 1968,3 3. 1275iin water (25ml) was added to a solution of 2-hydroxymethyl - 2-n-propvlpropan-1,3-diol trimethanesulphonate (12.Og) in dimethylformamide (100ml). The mixture was heated to reflux (130°C) for 4 hours then aLlowed to cool to room temperature. After a further 18 hours stirring, dilute sulphuric acid solution (50ml) was added slowly over 30 minutes. The mixture was extracted with chloroform. The extracts were dried over anhydrous magnesium sulphate and evaporated in vacuo to give a brown liquid. Hexane (200ml) was added and the mixture washed with water (3 x 50ml). Drying over anhydrous magnesium sulphate and evaporation gave an amber oil (6.8g). The crude oil (6,4g) in diethyl ether (10ml) was added dropwise to a suspension of lithium aluminium hydride (3.0g) in dry diethyl ether (100ml) at a rate sufficient to maintain reflux. The mixture was stirred for a further hour after addition was complete, then water (3ml) this was added carefully. Dilute sulphuric acid (3ml) was added and was followed by water (3ml). The mixture was filtered, the solid washed with diethyl ether (50ml) and the combined filtrates dried over

AJR/EB/28th June 1988

APO00075

BADOFOWl

-82anhydrous magnesium sulphate and evaporated 2 -mercap tome thy 1 - 2 -n-propylpropan-1,3-di thiol as . J g .

iii: Hydrogen chloride gas was bubbled through in vacuo to give a pale yellow oil suspension of paraformaldehyde (4.3g) in but-3-yn-1-ol (10.Og) (Aldrich) and dry dichloromethane (30ml) at -20°C for 30 minutes. The mixture was allowed to warm to room temperature then stirred for a further IS hours. Cold water (30ml) was added and the organic layer separated, dried over anhydrous calcium chloride and evaporated to give but-3-vnyl chloromethyl ether as an amber liquid (14.2g).

ι'·.’) 2-Mercaptomethy1-2-n-propylpropan-1,3-dithiol (2.3g) and triethvl orthoformate (1.74g) were heated together in dry toluene (3ml) containing p-toluenesulphonic acid (5mg) and the ethanol produced distilled off. After cooling, toluene (15 ml) was added and the mixture washed with water (2 x 10ml). Drying over anhvdrous magnesium sulphate and evaporation in vacuo gave a pale yellow oil.

and the extracts

Purification bv

This was extracted with diethyl ether (50ml) evaporated in vacuo to give a white solid, chromatography on alumina, eluting with 1:10 dichloromethane.h°xane saturated with ammonia gave 4 -n-propyl - 2,6,7 -1ri thiabicyclo [ .1. 2 . 2 octane as a white solid (0.33g, m.pt.l39°).

Mass spectrum (Chemical Ionisation)

M+l 207.

n-Butyllithiura (O.3ml,1.6M solution in hexane) was added to a solution (O.lg) in dry The solution was of 4 -n-propy1- 2,6,7-trithiabicyclo[2.2.2]octane tetrahydrofuran (5ml) at -70°, under nitrogen, stirred for 30 minutes and but-3-ynyl chloromethyl ether (O.O58g) in dry tetrahydrofuran (2.0ml) was added and the reaction mixture was

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-8312 λ11ο'«'ρ(1 to warm to 20°. Water (10ml.) was added and the mixture w a.-. extracted with diethvi ether. The ethereal extracts were dried over anhydro is magnesium sulphate and the solvent was removed i n vacuo , The residue was purified by chromatography on alumina, eluting with 1:10 dichloromethane : hexane saturated with ammonia. l-(But-3-vnvloxvmethvl)-4-n-propy1 - 2,6,7-trithiabicyclo[2.2.2’octane was obtained as a waxy solid (O.O32g).

f t-timtle XXX i I

1.-j E/Z) - Hex - 3 - en - 5 -ynv11 - 4-propy1 - 2.6,7 -trioxabicyclo f 2.2.21oc tane- 3 - carb oni trile

i) ((E/Z)- 5-Bromopent-4-enoic acid was prepared from diethyl malonatc and an 1,3-dibromopropene (mixture, of isomers, ALDRICH Chemical Company) using methodology described in Example XVI, stages (i) and (ii).

ί i. ¹ Using the procedure described in stages (ii) and (iii) of Example IV 1 - [(E/Z)-4-bromobut-3-enyl]-4-propyl-2,6,7-trioxabicyclof2.2.2 !oc tane- 3-carbonitrile (an oil) was prepared form ((E/Z)-5-bromopent-4-enoic acid and 3 - formyl-3-n-propyloxetane.

Gas liquid chromatography (glc):OV-17 at 230° produced one peak.

Mass spectrum (Chemical Ionisation)

M+l 316, 318 iii) A mixture of 1-[(E/Z)-4-bromobut-3-enyl]-4-propyl-2,6,7-trioxabicyclo [ 2 . 2. 2 J octane - 3 - carbonitrile (500mg), trimethyls ilvlacetv AJR/EB/28th June 1988

AP 0 0 0 0 7 5

BAD ORIGINAL ft lene(0.45ml), bis - triphenvlphosphinepallad turn dichloride (IC-g' and cuprous iodide (5mg) in dry die thylamine (10ml.) was stirred at room temperature under a nitrogen atmosphere for 4 hours. The soivont was then removed i_n vacuo. The residue was taken up in diethyl ether and washed with water and brine before drying over anhydrous magnesium sulphate and evaporation under reduced pressure. The residue was purified by column chromatography on alumina eluting with hexane containing 15i dlchloromethane saturated with ammonia. a - Freer.·] I - ί ( E/Z) - 6 - (t r ί me thyl s i lv 1 ) hex - 3 - en - 5 - ynyl 1 - 2.6 . 7 -1 r ioxab ic vc lo ’ 2 2 .2 ' octane - 3-carbonitrile was obtained as a pale vellow oil ( 36 5mr,> .

Gas-liquid chromatography (glc):OV-17 at 250° produced two peaks iE/Z isomers ).

iv) Tetrabutvlammonium fluoride (1.1ml of a 1M solution in tetrahvdrofuran) was added to a stirred solution of 4-propyl-1 -[<Ξ/Ζ¹ - 6(trimethylsilyl)hex-3 -en-5-ynyl]- 2,6,7 -1rioxabicyclo[2.2.2]octane 3 - carbonitrile (293mg) in tetrahydrofuran (5ml). The resulting mixture was stirred at room temperature for 1 hour when the solvent was removed under reduced pressure. The residue was partitioned between diethyl ether and water. The organic phase was separated, washed with water and brine, dried over anhydrous magnesium sulphate and then evaporated in vacuo. The residue was purified by column chromatrography on alumina eluting with hexane containing 15^ dichlcromethane saturated with ammonia. 1 - [ (E/Z)-Hex-3 - en - 5 - vr.v 1'4 - propyl - 2,6,7 -trioxabicyclo[ 2.2.2]octane - 3 -carboni tr ile was obtained as a colourless oil (143mg).

Gas-liquid chromatography (glc.):OV-17 at 250° produced one peak.

In an analogous manner the following compounds were prepared from 1 -[(E/Z) - 4 -bromobut- 3 -eny1]- 4-propyl - 2,6,7 -tr ioxab icyclo[2.2.2]octaneAJR/EB/28th June 1988

BAD ORIGINAL &

-85? 3 2

- 7 - c a rbon i t r ί 1 e and the requisite terminal acetvlene (.given in parenthesps):

-[E/Z) - 7-Methoxyhept- 3 -en-5 -yny 1 ]-4-propyl-2,6,7 -1r ioxab icvcΙοί 2 . 2 . 2 1 oc tane - 3 - carboni tr ile . (Methyl propargyl ether).

- ((E/Z)-7-Hydroxyhept-3-en-5-ynyl)-4-propyl-2,6,7-trioxabicyclo[2.2.2]octane - 3-carbonitrile. (Propargyl alcohol).

Example XXXIII

9-1-Butyl-1 -f(E)-hex-1-en-5 -ynyl1-2,6,7-trioxabicvclo i2.2.2]octane-3-carbonitrile

i) Using the method described in Example 17, stage (i), pent - 4-yn-i -.»i (Aldrich Chemical Company) was converted to pent-4-vnal. The crndn product was purified by bulb-to-bulb distillation (oven temperature <65° . 1 5rnm Hg) .

Gas-ILquid chromatography (glc):07-17 at 80° produced one peak.

ii) A mixture of pent-4-ynal(l.2g) and (carbethoxymethylene)triphenyl phosphorane (5.1g) in dichloromethane (20ml) was stirred at room temperature for 2.5 hours. The solution was evaporated under reduced pressure and the residue was extracted with hexane. Insoluble material was removed by filtration before the solvent was evaporated

APO00075

to leave a yellow oil	Ethyl (E)-hept-2-en-6-ynoate was obtained as a
colourless temperature	oil 155°.	(1. 15nu	8g) after bulb-to-bulb n Hg) .	distillation (oven
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-86'13 *-*'*»·.

ο «0 >

. Gas -1 iqu i.d ch romarographv <, g ic Ί : OV -17 at 120° produced two peaks : '->5-6 ι ίίί Λ solution o' ethyl (E)-hept-2-en-6-yroatc (1.8g) in 50* aqueous methanol containing 3% sodium hydroxide was stirred at ambietr temperature overnight. The methanoL was removed under reduced pressure and the resulting aqueous phase was extracted with dichloromethane. The aqueous phase was adjusted to pH 1 with concentrated hydrochloric acid and re-extracted with dichloromethane. These organic extracts were washed with brine, dried over anhvdnu? magnesium sulphate and then evaporated in vacuo to leavo (' E) - hep t - 2 - en-6 - vnoic acid as a white solid (1. 3g) .

ivl Using the method described in Example IV, stages (ii) and ;ii i' , A-t-huty1-1-((E)-hex-l-en-5-ynyl]- 2,6,7 -trioxabicyclo(2.2.21 octane - 5 carbonitrile was prepared from 3-t-butyl - 3-formvloxetane and lE’-hept - 2-en-6-ynoic acid.

Gas-liquid chromatography (glc):OV-17 at 220° produced two peak? i ° 5 : 5) .

Example XXXIV

A - n - Propyl - 2,6,7 - trioxabicyclo 1 2.2.2 1 octane -1 - carboxaldehyde oxime prop-2 ynyl ether i' A solution of ethyl A-propy1-2,6,7-trioxabicyclo(2.2.2]octane1 -carboxvlate (5.0g) (Example XXIII) in anhydrous tetrahydrofuran '10ml) was added dropwise to a stirred suspension of lithium aluminium hydride (1.86g) in dry diethyl ether (100ml) at 0°C, under nitrogen. Stirring was maintained at 0°C for 1.5 hours then at room temperature for 2.5 hours. An aqueous solution of sodium hydroxide (25ml of 10* solution), was added dropwise with cooling. The aqueous mixture was

AJR/EB/28th June 1988

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-87F32 <*xtrac t '’d with diethyl ether. The ethereal extracts were washed with water, brine and dried over anhydrous magnesium sulphate ana then evaporated in vacuo .

The residue , 1 -hydroxyme thyl - 9- propyl - 2.6,7 - tr ioxabicyclo [ /1. 2 . 2 ) octane, was obtained as a white crystalline solid (3.4g, m.pt. 100-101°C).

Mass spectrum (Chemical Ionisation) ;U1 189 ^: i'' 9 - Propyl - 2.6 , 7 - tr ioxab icvc lo [ 2.2 . 2 ) octane -1 -carboxaldehyde was prepared from 1-hydroxymethyl-9-propy1 -2,6,7 -trioxabicyclo[2.2.2]octane by the method described in Example IV, stage (i).

- Propyl - 2,6,7-trioxabicyclo[2.2.2]octane 1-carboxaldehyde. was obtained as a white solid (1.7g; m.pt. 117-118°C).

Mass spectrum (Chemical Ionisation).

M+L 187 iii) A solution of 9-propy1-2,6,7-trioxabicyclo[2.2.2]octane -1 -carboxaIdehyde (l.Og) in 1,2-dimethoxyethane (15ml) was added to a stirred mixture of hydroxylamine hydrochloride (1.51g) and sodium carbonate (2.29g) in water (10ml), at 20°. Stirring was maintained for 12 hours .

The mixture was diluted with diethyl ether and the organic phase was washed with water and brine, and dried over anhydrous magnesium sulphate, then evaporated in vacuo. The residue, 4-propyl-2,6,'AP 0 0 0 0 7 5

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-88P3 2 : i oxab i cyc lo f 2 . 2 . 2 ' oc t ane -1 - ca rboxa ldehyde oxime, was obtained .is •-hitp χ-.imjny solid 0.8 g ) .

Gas-liquid chromatography (glc): OV-17 at 210°C showed a single peak.

Mass spectrum (Chemical Ionisation).

M-*-l 202 :·/'> To a stirred solution of 4 - propyl - 2.6 , 7 - tr i oxabicvc lo ' 2 . 2 . 2 j oc fane - 1-car’noxa ldehyde oxime (O.32g) in dry methanol (10ml) was added propargyl bromide (0.44ml of an 80% solution in toluene), followed bv sodium methoxide (O.l41.g). The mixture was stirred at 20°C for 12 hours. The mixture was poured into water and the aqueous mixture was extracted with diethyl ether. The ethereal extracts were washed with water, brine and dried over anhydrous magnesium sulphate and then evaporated in vacuo .

The residue, a yellow oil, was purified by chromatography on silica (pre-treated with hexane containing 1% triethvlamine) eluting with 4:1 ethyl acetate: hexane containing 1* triethvlamine,

- Propy1 - 2.6,7 -trioxab icyclo[2.2.2]octane-1 - carboxaldehyde oxime prop 2-ynvl ether, was obtained as a white crystalline solid (O.O85g, m.pt. 73-74°C).

Example XXXV

- (4 -n-Propyl - 2.6,7 -1 ioxabicyclo f 2.221oct-1-vl)ethyl but - 2 -ynoate

i) A solution of ethyl 2-(4-propyl-2,6,7-trioxabicyclo[2.2.2]oct-1 -yl) acetate (5.0g) (Example XXIV) in dry tetrahydrofuran (10ml) was added

AJR/EB/28th June 1988

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-89P32 ii) dropwise to a stirred suspension of Lithium aluminium hydride (i.-Sg) in drv diethvl ether (100ml), at 0°C under a nitrogen atmosphere. Stirring was maintained at 0°C for 1.5 hours. An aqueous solution of sodium hydroxide (25ml of 10% solution) was added dropwise with cooling. The mixture was extracted with diethyl ether and the ethereal extracts were washed with water, brine and dried over anhydrous magnesium sulphate and then evaporated in vacuo. The residue , 1 -(2-hydroxyethyl)-4-propyl-2,6,7 -trioxabicyclo[2.2.2) octane was obtained as a colourless oil (3.5g) which crystallised on standing to give a low melting waxy solid.

Gas-liquid chromatography (gic):0V-17 at 210°C produced a single peak.

To a stirred solution of 1-(2-hydroxyethyl)-4-propyl-2,6,7-trioxabicyclo [2.2.2]octane (0.5g) in dry dlchloromethane (20ml) at 0°C was added 4-dimethylaminopyridine (55mg), followed by tetrolic acid (210mg).

The mixture was stirred for 5 minutes at 0 C, then dicyclohexylcarbodiimide (520mg) was added in portions (lOOmg) over 2 hours. Stirring was continued at 20°C for 12 hours. Water was added and the aqueous mixture was extracted with dichloromethane. The organic extracts were washed with 10% sodium hydrogen carbonate solution, water and brine before drying over anhydrous magnesium sulphate, and evaporation in vacuo. The residue was obtained as a yellow gum and was purified by chromatography on silica, pre-treated with hexane containing 1% triethylamine, eluting with 2:3 ethvl acetate : hexane containing 1% triethylamine.

AP000075

-(4-Propyl-2,6,7 -trioxabicyclo[2.2.2]oct-1-yl) ethyl but - 2 -ynoate was obtained as a white crystalline solid (O.266mg, m.pt. 80-81°C).

bad original

AJR/EB/28th June 1988

-90P32

Example XXXVI

-(Hex-5 -ynyl) - 4 -n-propyl - 2.6-dioxab icyclo f 2.2.21 octane (i) A solution of trimethylsilylacetylene (12.Og., Aldrich), in dry tetrahydrofuran (100ml.) was stirred at 0°, under a current of nitrogen and n-butyllithium (76.5ml. of 1.6M solution in hexane) was added dropwise. The solution was stirred for 30 minutes and a solution of 1-chloro-3-iodopropane (25.Og.) in dry tetrahydrofuran (75ml.) was added. The reaction mixture was allowed to warm to 20° and stirred for 18 hours. The mixture was poured into water and the aqueous mixture was extracted with diethyl ether. The ethereal extracts were washed with water and dried over anhydrous magnesium

-Gj s ulphate. The solvent was removed In vacuo and the residue distilled.

5-Chloro -1-triraethylsilylpent-1-yne was obtained as a colourless oil (12.7g., b.p. 67-72°, 15mm. Hg.).

O

JO ii) A mixture of 5 - chloro-1-trimethylsilylpent-1-yne (13.5g) and sodium iodide (29g) in butanone (100ml) was heated at reflux for 10 hours. After this time the solvent was removed in vacuo and the residue partitioned between diethyl ether and water. The organic phase was separated, washed with water and brine before drying over anhydrous magnesium sulphate. The solvent was removed under reduced pressure to leave 5 - iodo -1-trimethylsilylpent-1-yne as a colourless oil(19.3g>.

(iii) n-Butyllithium (19.0ml., 1.6M solution in hexane) was added dropwise to a stirred solution of acetone N,N-dime thylhvdrazone (2.6g.) (ref. R.H.Wiley et al J. Org. Chem. 1957, 22 . 204) in dry tetrahydrofuran (40ml.) at -70°, under a current of nitrogen. The resulting solution was stirred for 30 minutes and a solution of 5 - iodo -1 - trimethylsilylpent-1-yne (8.1g.) in dry tetrahydrofuran (30ml.) was added dropwise and the reaction mixture was stirred at -70° for 1 hour, allowed to warm to 0° and stirred for 2 hours. The

AJR/EB/28th June 1988

BAD ORIGINAL

-91P32 • reaction mixture was cooLed to -70 and a second portion of n-butvllithium (19ml. 1.6M solution in hexane) was added dropwise.

The mixture was stirred at -70° for 15 minutes, allowed to warm to 0 and stirred for 30 minutes. A solution of 5-iodomethyl-2,2-d-imethvi5-n-propyl-1,3-dioxane (9.0g. European Patent 216625) in dry tetrahydrofuran (30ml.) was added. The mixture was stirred at 0° for 30 minutes and 48 hours at 20°. The solvent was removed i_n vacuo and the residue was poured into water. The aqueous mixture was extracted with diethyl ether and the ethereal extracts were washed with water, dried over anhydrous magnesium sulphate and evaporated in vacuo. Chromatography of the residue on silica, eluting with diethyl ether hexane 1:9 gave a yellow oil which consisted of 2,2-dime thy 1. - 5 - ( 3 - oxo9 -tr ime thyIs i ivlnon-8-ynyl)-5-n-propyl-l,3-dioxane and 7-oxo-l-trimethvlsilyloct-1-yne in the ratio of 3:1 (1.4g.). The above mixture in tetrahydrofuran (25ml.) and hydrochloric acid (50ml.,IN solution) was stirred vigorously at 20° for I hour. The tetrahydro- furan was removed in vacuo and the residue was extracted into diethyl ether. The ethereal extracts were dried over magnesium sulphate and the solvent was removed in vacuo. 4-q-Propyl -1-(6-trimethylsilylhex- 5-ynyl)

2.6-dioxabicyclo[2.2.2]octane was obtained as a colourless oil (1.06g.) and was used without further purification.

Mass spectrum (Chemical Ionisation)

M + 1 309 (iv) Tetrabutylammonium fluoride solution (1.0M..solution 4.0ral.) was added to a stirred solution of 4-n-propyl-1-(6-trimethylsilylhex-5-yny1)

-2,6-dioxabicyclo[2.2.2]octane in dry tetrahydrofuran (40ml.) at 20° and the mixture was stirred for 1 hour. The solvent was removed in vacuo and the residue was extracted with diethyl ether and water. The ethereal extracts were dried over anhydrous magnesium sulphate and evaporated in vacuo. The residue was chromatographed on alumina

APO 0 0 0 7 5 bad original $

AJR/EB/28th June 1988 eluting with dlchloromethane hexane 1.9, saturated with

1. - i Hex - 5 - ynyl) - 4 - n- prop·.· 1 - 2 . 6 - d ioxab icvc 1» [ 2 . 2 octane was amnion i a

->h t -, t no d as a colourless oil (O.-‘5g.)

Example XXXVII

-; (Z)-l-Fluoro-3,3-dimethylbut-1-envl1-4-propyl-2.6.7-trioxabicyclo f 2.2.2¹ octane - 3-carboni.trile ·%!

i.) Λ mixture of ethyl bromofluoroacetate (25g) (Fluorochem.) and triethylphosphite (,30ml) was heated at 150°, in an apparatus set-up for fractional distillation, until production of bromoethane ceased. Distillation of the residue, under reduced pressure, then gave ethvl diethylphosphonofluoroacetate as a colourless oil (9.05g, b.p. 80-88°. 0.1mm Hg ) .

ii) n-Butyllithium (4.8ml of a 1.6M solution in hexane) was added to a stirred solution of di isopropylamine (1.1ml) in tetrahydrofuran (15ml) at 0°C under nitrogen. The resulting mixture was maintained at 0°C for 0.5 hour and then cooled to -70° when a solution of ethvl diethylphosphonofluoroacetate (1.7g) in tetrahydrofuran ( 5ml') was added. After a further 0.5 hour at - 70°,trimethylacetaldehyde ',0.76ml) was added neat and the resulting mixture was allowed to warm to room temperature over 5 hours. After this time, water f5ml) was added and the bulk of the solvent was removed under reduced pressure The residue was partitioned between diethyl ether and water. The organic phase was separated, washed with water, 10% hydrochloric acid solution and brine before drying over anhydrous magnesium sulphate. The solvent was removed in vacuo to leave ethyl (Z)-2 - Fluoro-4.4 dimethylpent-2-enoate as a pale green oil (l.Og).

Gas-liquid chromatography (glc): OV-17 at 100 produced one peak.

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- ’3Using the method described in Example XXXIII, stage iii' ( Z) - 2 - Fluoro - 4 , A - d ime tbvlpent - 2 - piio ic acid was prepared from ethvi (Z)-2-fluoro-4,4-dimethylpent-2-enoate.

iv) Using the method described in Example IV stages ii) and iii). 1 - ((2)-1- Fluoro-3,3-dimethylbut-1 -enyl]-4-propyl-2,6,7 -trIoxabicyclo(2.2.2 J octane - 3-carbonitrile was prepared from 3 - formyl - 3-n-propvloxetane and (Z)-2-fluoro-4, A - dimethylpent-2 - enoic acid.

Gas liquid chromatography (glc): OV-17 at 250° produced one peak.

Example XXXVIII

-Ethoxymethvl-1-(hex-5-ynyl)- 2,6,7 -trioxabicyclo[2.2,21 octane - 3-carbo nitrile

i) To a stirred solution of 5,5 - di-(hydroxymethyl) - 2,2 - dime thy 1 -1, 3 dioxane (5.0g) (Beilstein 19, II, 93) in dry dimethylformamide (50ml) under nitrogen, at 20°, was added sodium hydride (0.68g, 803 dispersion in oil). The mixture was stirred at 80° for 2 hours and cooled. Ethyl iodide (4.4g) in dry dimethylformamide (40ral) was added and the mixture was heated at 110° for 3 hours. The mixture was cooled and poured into water. The aqueous mixture was extracted with diethyl ether. The ethereal extracts were washed with brine, dried over anhydrous magnesium sulphate and evaporated in vacuo.

2.2- Dimethyl-5-ethoxymethyl-5- hydroxymethyl -1,3-dioxane was obtained as a pale yellow oil (1.2g) and was used without further purification.

ii) A mixture consisting of 2,2-dimethyl-5-ethoxymethyl - 5-hydroxymethy11.3- dioxane (15.Og) and Amberlyst 15 (3.0g) in methanol (500ml) containing water (10ml) was refluxed with stirring for 4 hours. The mixture was filtered and the filtrate was evaporated In vacuo.

S Z 0 u u u dV

AJR/EB/28th June 1988

BAD ORIGINAL S

-942 - Ethoxvisethvl - 2 -hvdroxymethvlpropan-1.3-diol was obtained visenna oil <10 .5g' and was used without further purification.

: i i' 4-Ethoxymethy1 -1 -(hex-5 -yny1) - 2,6,7 -trioxabicyclo[2.2.2 ] octane - 3 - carb onitrile was prepared from 2 - ethoxymethyl - 2-hydroxvmethyIpropanL.3-diol using methodology described in Example IV.

In an analogous manner 1-(hex-5-ynyl)-4-methoxymethyl-2,6.7-tr ioxabIcyclo[2.2.2joctane-3-carbonitri le was prepared.

Example XXXIX

-1- Butyl - 1 - i. hex - 5 - ynvl) - 2 ,6.dioxa-7 -thiabicyclo f 2 . 2 . 2 'octane u-t-Butyl-1 -(hex-5-yny1) - 2,6, -dioxa-7 -thiabicyclo[2.2.2]octane was prepared from trimethyl orthohept-6-vnoate and 2,2-di-(hydroxymethyl)-3,3-dimethvl3· butan-1 - thiol (European Patent 216625) using methodology described in ,X$ European Patent 216625.

t>

Example XL i- ( 3 - MethyIhex-5 -vnvl)-4 -n-propyl-2.6.7 -trioxabicyclo[2.2.2 ΐ octane - 3-carbonitrile i > 2-Methylpent-4-ynyl methanesulphonate was prepared from

- me thylpent-4-yn-1 - ο 1 (ref. E.Buchta and H. Schlesinger Chem. abs. 51: 1104i) using the methodology described in Example II, stage (i).

ii) A solution diethyl malonate (46g) in dry toluene (500ml) was stirrpd at 0°, under nitrogen. Sodium hydride (8.6g of 80% dispersion in liquid paraffin) was added carefully and the mixture was stirred at 100° for 1 hour. The mixture was cooled and 2-methylpent-4-yny1 methanesulphonate (10.2g) was added and the mixture was refluxed, with

AJR/EB/28th June 1988

BAD ORIGINAL &

-95P32 stirring for 3 hours. The mixture was cooled, poured into '-ar.ei· .uvl the aqueous mixture was extracted with diethyl ether. The ethereal· extracts were washed with water, dried over anhydrous magnesium sulphate and evaporated in vacuo. The excess diethyl malcnate was removed by distillation at reduced pressure and the residue was purified by chromatography on silica, eluting with 7.5% diethvl ether in hexane.

Diethyl. (2-methylpent-4-ynyl)malonate was obtained as a colourless oil (6.5g).

Gas liquid chromatography (g.l.c.) : OV 17 at 160° produced one peak.

Mass Spectrum (MS), Chemical Ionisation

M + 1 261

4-Methvlhept-6-ynoic acid was prepared from diethvl (2-me thyIpent-4-yny1)malonate using methodology described in stages (iii) and (iv) of Example XXVII.

- (3-Me thylhex-5-ynyl)-4-n-propyl-2,6,7 - trioxabicyclo[2.2.2]octane - 3 carbonitrile was prepared from 4-methylhept-6-ynoic acid and

- formyl-3-n-propyl-oxetane using methodology described in Example IV.

Using stages (II) and (iii) of Example XXX and starting from (S)-4-methyl-6-oxoheptanoic acid (J. Wolinsky and D. Chan J. Amer. Chem. Soc. , 1963 85, 937), (S)-4-methylhept-6-ynoic caid was prepared

- [ (S)- 3-Methylhex-5-ynyl]-6-n-propyL-2,6,7-trioxabicyclo[2.2.2]octane-3-carbonitrile was prepared from (S)-4-methylhept-6-ynoic acid using methodology described in Example IV.

APO00075

AJR/EB/28th June 1988

BAD ORIGINAL

-96Startine from,3-i-butyl-3-forrayloxetane and 4-methvlhept-6-vnoic 1-51, -» -i-buty 1-1-(3 - me thy lhex- 5 - yny I) -2,6,7-trioxabicyclo(2.2 . 2 ΐ - octane - 1 carbonitriie was prepared.

Example XLI

I - (t - Butylth iomethy1) - 4 -n-propv1- 2,6.7 -tr ioxabicyclo ^f 2.2.2 j octane - 3 -carboni t r i 1 e ϊ·ί Using stages (i) and (ii) of Example XIII and starting from t-butvlthiol and ethyl bromoacetate, t-butylthioacetic acid was prepared.

- (t-butylth iomethyl·) -4 - n- propyl - 2,6,7 - tr ioxab icyclo[ 2 . 2 . 2] octane - 3 -c.arbonitrile was prepared from t-butylthioacetic acid and 3 - formyl - 3-n-propyl oxetane using methodology described in Example IV.

VbO Ο o u

Example XLI1

- (Hept- 5 -ynyl)-4-n-propyl-2.6.7-trloxabicyclo[2.2.21octane n-Butyllithiuw (1.7ml, 1.6M solution in hexane) was added dropwise to a stirred solution of 1-(hex- 5-ynyl)-4-n-propyl-2,6,7-trioxabicycloί2.2 . 2 ! octane (O.65g) in dry tetrahydrofuran (25ml) at 0°, under a current of nitrogen. The mixture was stirred at 0° for 15 minutes and then methyl iodide (0.18ml) was added. The reaction mixture was stirred at 0° for i hour and then evaporated in vacuo. The residue was partitioned between diethyl ether and water. The ethereal extracts were dried over anhydrous

AJR/EB/28th June 1988

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-97P32 magnesium sulphate and the solvent was removed in vacuo. The residue was purified by chromatography on alumina, eluting with 1:10 dichloromethane hexane, saturated with ammonia.

-(Hept-5-yny1)-4-n-propyl- 2.6 , 7 trioxabicyclo [ 2.2.2]octane was obtained as a colourless crystalline solid (O.23g) (contained 15% of 1-(hex-5-ynyl)-4-q-propyl-2,6,7-trioxabicyclo [2.2.2 J octane).

Example XLIII

4-(2,2 -Dichlorocyclopropymethyl)-1-(hex-5-ynyl)-2,6,7-trioxabicyclo(2.2.2'octane

i) 2-Hydroxymethyl-2-(prop - 2-enyl)propan-1,3-diol triacetate (2.2g) (Example XVII) was heated at 130°, with stirring. Sodium trichloroacetate (5.0g) was added over 2 hours and the reaction mixture was heated at 155° for 24 hours. The mixture was cooled and partitioned between diethyl ether and water. The ethereal extracts were dried over anhydrous magnesium sulphate and evaporated in vacuo. The residue was purified by chromatography on silica, eluting with diethyl ether : hexane, 1 : 4.

2-(2,2-DichlorocyclopropyImethyl)- 2-hydroxymethylpropan-1,3-diol triacetate was obtained as a colourless oil (1.4g).

Mass Spectrum (Chemical Ionisation):

Ammonia as Ionising Gas. M + 18 372.

ii) Using methodology described in Example I, stage (i), 2-(2,2-dlchlorocyclopropylmethyl)- 2-hydroxymethylpropan-1,3-diol was prepared from s L 0 0 0 o dV

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-98Γ3 2

- (2.2 -<i ichlorocyc topmpylmethvl ) - 2 -hydroxvme thvI·propan -1. 3 - d ie I t r i .1 r p t. a t e iii) Using methodology described in Example VI, Method 2, 4 - (2.2-dichiorocyclopropyImethy1) -1 -(hex-5-ynyl)- 2,6,7 -trioxab icyclo[2.2.2]octane was prepared from 2-(2, 2-dichlorocyclopropyImethy1) - 2-hydroxvmethylpropan -1,3-diol and trimethyl orthohept-6-ynoate.

•nt o

o o

ua

AJR/EB/28th June 1988

BADORIGINAL ft

Formulations

-99I. Emulsifiable Concentrate

Compound of formula (I)	10.00
Ethylan KEO	20.00
Xylene	67.50
Butylated Hydroxyanisole	2.50
	100.00
Wettable Powder
Compound of formula (I)	25.00
Attapulgite	69.50
Sodium isopropylbenzene sulphonate	0.50
Sodium salt of condensed naphthalene
sulphonic acid	2.50
Butylated hydroxytoluene	2.50
	100.00
Dust
Compound of formula (I)	0.50
Butylated Hydroxyanisole	0.10
Talc	99.40
	100.00
Bait
Compound of formula (I)	40.25
Icing Sugar	59.65
Butylated hydroxy toluene	0.10

100.00

AP 0 0 0 0 7 5

AJR/EB/28th June 1988

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-100Lacguet

Compound of formula (1) 0.1 Piperonyl Butoxide 0.5 Butylated Hydroxyanisole 10.1 High aromatic white spirit 92.0

100,00

6. Ae roso I

Compound of formula (I) Butylated Hydroxy anisole 1,1.1-Tr ichloroethane Odourless Kerosene Arcton 11/12. 50:50 mix

0.30

0.10

9.00 15.60 80,00

100,00

Spray

Compound of formula (I) 0.1 Butylated Hydroxyanisole 0.1 Xvlene 10.0 Odourless Kerosene 89,3

100.00

8. Potentiated Spray

Compound of formula (I) 0.1 Piperonyl Butoxide 0.5 Butylated Hydroxyanisole 0.1 Xylene 10.1 Odourless Kerosene 89,2

100.00

BAD ORIGINAL Ά ,\JR/EB/28th June 1988

-101Γ? 2

BIOLOGICAL ACTIVITIES

The following examples illustrate, in a non-limiting manner, the pesticidal activity of compounds of formula (I).

Spray Tests

The activity of the compounds of the invention were tested by dissolving the compounds in acetone (5») and then diluting in water: 'Synperonic' (79.5%: 0.5%) to give a water emulsion. The solution was then used to treat the following insects.

Musca domestica female Musca were contained in a cardboard cylinder with gauze over both ends. Solution containing the compound was spraved onto the inserts ·,η enclosed and mortality assessed after 98 hours at 25°.

The following compounds were active at clOOOp.p.m.

9. 5. 1+. 20, 21. 22, 23. 29, 25, 26. 28, 32. 93, 94, 45. 50, 53. 59. 56. 69. 71, 72. 76, 77, 82, 88,89.

AP 0 0 0 0 7 5

The following compounds were active at <200p.p.m.

6, 9. 10, 11. 12, 13, 15, 16. 17,	29,	30,	31, 33,	39,	96,	97,	98,	52,	5 7
58, 59, 60, 61, 62, 63, 69, 65, 68,	74,	75,	78. 79,	80,	81,	83,	84,	85,	90

AJR/EB/28th June 1988

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SjJjTfL·.Ι.ίΰΛ <fmariu.? and Tribo 1 ium castaneum

2' adult S i teph i ius and T r ibo 1 ium were added to lOg wheat which had been previously treated with 2ml of the solution containing the compounds . Mortality was assessed after 6 days at 25°C.

The following compounds were active against Sitophi lus granar i us at <1000 p . p . m. :

10. 19. 22, 23. 25, 26, 2 7, 32, 43, 44, 50, 56, 69, 82, 85, 88, 89. '⁵0 ,

The follow!	ng compounds were active against 5_	LLQ£		is granarius at <200
p.p.m.: -
3, 4, 5, 6,	9, 12, 14, 15, 16, 17, 29, 30, 31,	33,	34,	45, 47, 48, 53. 54.
5'. 58. 54,	60, 61, 62, 68, 72, 74, 75, 76, 77,	78 ,	79 ,	80, 81.

The following	compounds	ve re	active	against Tribolium castaneum at -.	1.000
p.p.m.:-
4. 6. 10, Lu,	17, 33, 53,	5 7 ,	58, 65,	71, 76, 79, 82, 84
The following	compounds	were	active	against Tribolium castaneum at	<7 Γι
p.p.m.:-
9. 12, 15, 1.6.	34, 46, 63	7 ά ,	75

bad original

AJR/EB/28th June 1988

-103P 32 : ϊνζ-is per sieve

ID adult M.vzus were pi.iced on a leaf disc of chinesp cabbage. ,’ά hours later the disc was sorayed wit.: a solution containing the compound Mortality was assessed after 2 days at 25°.

The following compounds were active at <1000 p.p.m.:4. 4. 17, 37. 46, 53, 56, 60, 71. 77, 78, 79, 80. 81, 84.

The following compounds were active at <200 p.p.m.:6. 45. 47, 48. 57, 58. .39, 62, 63, 74, 75, 76.

Plutella xylos tella ⁷ Plutella lar.’ae were sprayed with the solution containing the compound and added to a Chinese cabbage leaf which had been similarly spraved and left to dry. Alternatively 8-10 Plutella larvae were put onto leaf discs and sprayed with the solution containing the compound. MortaLit·.· was assessed after 2 days at 25°.

The following compounds were active at <1000 p.p.m.:15, 16, 25, 29, 31, 33, 34, 35, 48, 55, 56, 58, 59, 65, 68, 71, 75, 77, 78,

7°, 80. 81. 83, 85, 87

The following compounds were active at <200 p.p.m.:BAD ORIGINAL 0

AP η ο ο o 7 5

AJR/EB/28th June 1988

-104Ρ 3 2

9, 12. 13. 46. 47, 57, 74

Tetranychus urticae

Leaf discs containing mixed population of Tetranychus urticae were sprayed with the solution of the compound. Mortality was assessed after 2 days at 2 5°C.

The following compounds were active at <1000 p.p.m.:78 , 81 , S3.

The following compounds were active at <200 p.p.m.:60, 80

Additional spray tests

The activities of the compounds were investigated further. The compounds were dissolved in acetone (75%) and water (25%) was added. The solution was then used to spray the following insects:Aphis fabae

A mixed population of Aphis fabae was tested on Nasturtium leaf.

The following compounds were active at <1000 p . p. m. :-.

4. 6, 13, 16, 17, 25. 26, 29, 30, 31, 33, 46, 47, 50, 54, 63, 65

AJR/EB/28th June 1988

BAD ORIGINAL ft

-105P32

Mac ros teles fasc i f tons

Adult Macros te les fasc i f tons were tested on wheat seedlings.

The following compounds were active at <1000 p.p.m.:6, 9. 13, 16, 17, 23, 25, 26, 29, 31, 33, 34, 46, 47, 63, 65, 68

Tetranvchus urticae

A mixed population of Tetranvchus urticae was tested on bean Leaves. The following compounds were active at <1000 p.p.m.:5, 9, 16, 30, 31, 33, 46, 47, 50, 65, 68

Diabrotica undecimpunctata

3rd Instar Diabrotica undecimpunctata were tested on filter paper.

The following compounds were active at <1000 p.p.m.:3, 4, 5, 6, 13, 16, 17, 23, 25, 26, 29, 30, 31, 33, 34, 46, 47, 53, 63, 65, 68

AP 0 0 0 0 7 5

Topical Application Tests

The activity of compounds of the invention against unanaesthatised female Musca domestlca (WRL strain) was demonstrated by the topical application to the test insect of a solution of the compound under test with piperonyl butoxide in butanone. Mortality was assessed at 48 hours.

AJR/EB/28th June 1988

BAD ORIGINAL

-106 F ’ 2

Vb 6 o 0 0

The following compounds wore active at l^g:10. 11. 12. 13. 15, 1'. 79, 30, 31, 33, 34, 47. 52. 64. 63. S3, 34.

The activity of compounds of the invention against anaesthetised male PerIplaneta americaria was demonstrated by the topical application to the test insect of a solution of the compound under test in butanone Mortality was assessed after 6 days.

The following compounds were active at <50Mg:2. 6, 16, 17, 25, 31, 39, 83

The activity of compounds of the invention against anaesthetised male Blattella germanica was demonstrated by topical application to the test insect of a solution of the compound under test in butanone.

Mortality was assessed after 6 days.

The following compounds were active at <5pg:6, 9, 12, 14, 15, 16, 17, 20, 29, 30, 31, 33, 34, 45, 46, 48, 56, 57. 58, 59, 60, 61, 62, 63, 65, 66, 67, 71, 72, 74, 75, 83, 84, 90.

AJR/EB/28th June 1988

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-107P32

Ncmatucidal activity

Me Lo idogyne incognita

Selected compounds of Meloidoevne incognita. p.p.m. Triton X - 100.

the invention were assayed on freshly hatched J2 The test solution comprised 1% acetone with 100

Activities were assessed after 24 hours.

The following compounds were active at elss than

100 p.p.m.:6. 16. 17. 26.

Mammalian toxicity

The toxicity of compounds of the invention was determined bv oral intubation of Charles River CD1 mice, fasted for 3 hours. The compounds were administered as solutions in DMSO at 200mg/10ml/kg, 20mg/10ml/kg and

APO00075

	10ml/kg.	Toxicity	was assessed	over a	14 day	period after dosing
The	following	compounds	gave an ΕΠ^θ	>200mgkg 1
17,	60
The	following	compounds	gave an LD.Q	in the	region	of 2O-2OOmgkg 1
16,	75

AJR/EB/28th June 1988

BAD ORIGINAL 0

-108F32

APPENDIX 1 ·“» ^CH3^C

CO₂Et (i)

Cl

I

CH₂=C(ii)

CH=C ch₂oh (iii)

Cl

I

CH =C —

-CO₂Et

-CH₂0H

CHFC

-C0₂H (i) PCl^, pyridine (ii) LiAlH^.Et^O (iii) n-BuLi, Thf iv) Pyridinium dichromate, Dmf.

AJR/EB/28th June 1988

BAD ORIGINAL ft

- L09P 3 2

HS

SH

OH

OH (iii) (i)

APPENDIX 2

\

Ph Ph

Me ( ii) ( i v>) (iii)

0S0₂Me

Ph Ph

CHO (v)

Me

OH ir>

APO

Ph Ph (i) MeSO^Cl, pyridine (iii) Na, liquid NH_O (ii) PhCH₂SH, NaH, Dimethylformamide (iv) Pyridinium chlorochromate, sodium acetate, CH₂C1₉ (v) MeMgl, Et₂O

AJR/EB/28th June 1988

BAD ORIGINAL ft

-110P3 2

APPENDIX 3

Cl

SiMe

Me., NN (iv) “•y o

I’’¹

SiMe,

Me

Cl

(iii) j iMc.

Me

(vi)

Thf, hydrochloric acid (IN solution) (vii) (n-BuJ^NI, Thf

-BuLi , Thf

AJR/EB/28ch June 1988

BAD ORIGINAL &

-IllΡ 3 2

APPENDIX 9 (i) (CH_) CO_Alk n 2 (CH_O) CH_OH 2 n 2 (ii)

AP 0 0 0 0 7 5

(i)	I.iAlH4, Et20, 20°-30°	(ii)	(coci)2, ch2ci2
iii)	MeOCH^CH^OMe, Nh^OHHCl,	Na2C03,	H20, 20° - 30°

DMSO/MEt₃,- 70° to 20°,

AJR/EB/28th June 1988

BAD ORIGINAL ft

Ηr* to ϋ CD U (T in Λ u W Η o z a 0 0 • a

T3 c

□

CL

H ft) σ

hΦ

M

Hu «Ή

-- «ο·

c

rj

r’ Μ X

to

·<

to

t»

*· w σ\

x x

X

X

►0

z

*0 X

X

a

1

3 1 3

-

□

-

1

1 Η- 1

ro ro

ro

ro

ro

ro

ro ro

ro

σ·

-—s

H- — MJ

IO

to

M

M H u

X X

3

X

3

X

3 X

3

•Tj

Ο φ H

1

X

1

3

3X

1 1

3

1

3

1

3 1

3

I—·

η

~ η

σ

σ

3

3 3 H-

UI UI

1

UI

1

UI

i ui

1

cd

0

Φ o

H-

H-

Mi

X 3 3

1 1

1

1

Λ 1

Λ

co

Ό

3Ό

a

a

□

3 ro ro

m; m:

1

Mi

1

Mi

1 Mi

1

co

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3 1

φ

ro

m;

MJ X 3

3 3 m;

3 Mi

3 S 3 m;

MX W

rt

ft

3

3 i srx u;

3 m;

3 Mi

3 μ-

3

1

3 1

3

3

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Ω υΐΜς

3 HX

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3 MJ MMi

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Mi

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Mi

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Ω *X 1

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w-

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3

3 3

·—<

•-1

C

C

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1

1

rt

3

3

3 3

1

1

(t)

ro

t->

►-·

X

X

1

1

►<

Mi

(-1

H>

13

!□

13

13

13

13 13 13 n

Q

13

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13 13 13 13

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1

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33

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to

to

<X) 03

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3

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c

c

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HΟ

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Ο

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0)

Φ w

a — a —	o 0
t->- Η- Η- Η-	3· 3
χώ x in	ro ro	I
3 O 3 o	X X
C B C. 3	Μί Mi
ta ro >a ro	3 3	X·
ro ta ro ia

Ο---ul χχχχοοηοχχ ζ ζ mj tO ΙΟ

><	X	X		X	<		< <	< 3	XXX
X	IX			X	X	X	X	<	< X X
	X				X	X			X X
X	X				X

X W 0> u; 3 3 3” rt o 3 a ro rt HΩ w

X ft· a

Ό

Ό

L.J

M

BAD ORIGINAL Ά rr rj

CD ft

ΞΓ u

c		-J Mi	-j Ο ι-1 Ο Φ	kj cn j* χ	3	X	X
□		I 3	ι X ι Ο r+	1 1 1 Φ	Φ	C	Φ
		3I<	ΧΜζ —' rt tX	— Μζ X X	rt	rt	X
	h-»	Φ J—·	it ® ι k	X 3 Φ 1	3	1	1
H*		r+	rt φ C -J hck rtm<	CJ	σι
\£>		3	t rt(t I	rr m tr ι		|	«
ω		0	o zr ι <	I m; j<		Mi ·<
03		X	X ·< cj 3	CJ H· 3		3	3
		»<	< 8< ι <	ι t<		MJ Mi
		zr	tr m: h-	S Φ 8-		t-<	H·
		a	(0 3	3 X		o
		Ό	•σ m;	Mi 1		X
		rt	rt t-*	H<		MJ
		1	1 1	0		1
		cn	cn	X

I I ><

Irt 1	13 )	13 |	13
X	I 83	1 83	1 83
c	>8	8(	+(

GJ LG GJ LO LO IO GJ GJ CO 0\ in GJ N) H

LO	KJ	KJ	KJ	KJ	KJ	hJ	KJ	KJ	ro	•J
O	LO	CO		σ\	in		GJ	KJ	Η»	o

X	XXXBX3XBXOkjok>Ok>	rt κι rt
Φ	φ φ Φ	Φ	C	Φ c	ID C	X 1	X 1	X 1	3 I	3
X	ΧΌΌ	rt rt	rt rt	ft rt		m; -.	m; —-	H- —'	H-
1	ι rt rt	3	1	3 I	3 1	— χ	- X	>- χ	O X	o
cn	cn ι ι	M<	cjm; cjm: cj	Φ π	Φ rt	Φ »1	85
1	ι σι σι	►—1	1	8-* I	8-· 1	rt 0	(t O	rt o	Φ 0	Φ
►< Mi ι <		m;	Mi	Mi	383	3Ό	383	ft 83	rt
3	3<X		3	3	3 M< 1	Mi 1	Mi I	3 1	3
<<33		»<	m;	m;	1— KJ	8-· K>	I-* KJ	m: kj<
H h-K m;		8-»	(-<	+-	1	1	1	Η· 1	8-<
	Η1 8-*		o	0	o	»<	M<	Mi	·<
			X	X	X	3	3	3	3
			Μζ	M<	·<	m;	m;	m;	m;
			1	1	1	8-*	8->	8-*	h*

III I

X X XX

(3 1

Irt x 1 c

X X 8( 8f

ι KJ 13 13 Irt K) I I | |

13 1

Irt 1

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Claims (11)

1) A compound of the formula (I):

wherein R is a <7 non-aromatic hvdrocarbvl group optionally substituted by, or methyl substituted by cyano, halo, C, , a 11 ;.·

3 3 optionally substituted by halo, or a group S(O)^R' where R is alkyl optionally substi tuted by halo and m is 0, 1 or 2, or R is phenyl optionally substituted by alkoxy, alkyl, C., .

alkynyl, halo, haloalkyl, cyano or a group S(O)^R^ as defined hereinbefore;

R and R may be the same or different, and each is hydrogen, halo, or a C₁ _ aliphatic group optionally substituted by halo, cyano, C _r 1 1 carbalkoxy, C, , atkoxv, or a group S(0) , R wherein m' is 0, 1 or 3

4 ^m 1 and R is alkyl; cyano, gem dimethyl, or < carbalkoxy, or R and R and the carbon atoms to which they are attached form a C_{r ;} carbocyclic ring optionally substituted by halo, or a aliphatic or alkoxy group;

AP 0 0 0 0 7 5

A-X contains between 3 and 20 carbon atoms wherein A is a ₁ , non-aromatic hydrocarbyl group which optionally contains one to si:·: hetero atoms which are the same or different and are each selected from oxygen, sulphur, nitrogen, fluoro or chloro and is optionally substituted by one or two hydroxy groups, or A is a Ci^O or CH^SiO) group wherein ri is 0,1 or 2;

X is hydrogen, halo, a group Si R⁵, R⁶, R⁷ or Sn R⁵, R⁶, R⁷ wherein R , R^ and R⁷ are the same or different and are each a hydrocarbyl

AlR/RB/28th June 1988

BAD ORIGINAL

12 6 ••I o

group containing up to 8 carbon atoms optionally substituted by one to three halo, C r.lkoxv, C, , alkvlthio, C. _r alkvIsulphiny1, i - o 1-6 ^J i - *) - I-'.a 1 kyl sul phenyl , cyano. C ₍ acyloxy or C rarh.rlkoxv group's or, whr:i 5 7 ¹ 1 - >

one or more of R to R' is alkynyl, this is optionally substituted by silvl substituted by three C- alkyl· groups, or X

R⁸

I 10 8 9 is a group C - R wherein R and R are the same or different:

k⁹ and are each independently selected from hydrogen, halo, cyano, carbalkoxy, CL . alkyl optionally substituted by one to three halo ’ ⁴ 1 ] atoms, cyano, carbalkoxy, alkoxv cr a group S(0)^,,R wherein ni' ‘ is 0, 1 or 2 and R is C, , alkvl; Ch , alkoxv ci12 . ^l’⁴ ' 12 ^1-4 S (0) R who rein in' ' ' is 0 1 or 2 .and R is (, .· i 1- . !

8 ' '* >

optionally substituted by one to three fluoro atoms, or R and R and the carbon atom to which they are attached form a C cvcloalkvl

10 ^3-6 ' ring, and R is hydrogen, halo, hydroxy, cyano, alkoxy, acyloxy, carbalkoxy or a hydrocarbyl group optionally substituted by hydroxy, cyano, C. , alkoxy. C acyloxy, Ch , l- 1 - 13 ^{1 1} carbalkoxy, one to three halo atoms or a group S(0) ,,,, R wherein 13 10 ^m m'''' is 0, 1 or 2 and R is Ch alkyl, or R is a group S(0)m’''’’

14 ^1-4 14

R wherein m' ' ' ' ' is 0, 1 or 2 and R is C, , alkvl optionallv

1-a substituted by one t.o three fluoro atoms;

Y and Y are the same or and S(0) n , where n' is o, wherein n is 0, 1 or

different and are each selected from oxygen 1 or 2; and Z is CH„CH,, CH„O or CH„S(O) ,,.

provided that when A does not contain a C~-C fragment X is a group R⁸

C - wherein R⁸, R⁹ and are as hereinbefore defined except

1 9 R'

8 9 that R and R are not hydrogen.

2) A compound of the formula (I) according to claim 1 wherein R is n-propyl, n-butyl, i.-butyl, t-butyl or phenyl.

AJR/E8/28th June 1988

BAD ORIGINAL

1 27

P32 IJTO

Λ rompnund of the formula (I) according to claim ¹ or 2 wherein f R‘ arc independently selected from hydrogen, methyl, cy-un tri fluoromethy1.

4) A compound of the formula (I) according to any of claims 1 to 3 wherein A is a -(CHj)^ C**C- group, a —/ « group, a

-CH-CH(CH₂)₂C»C- group, a CH^CHp ₂C«C- group, a - (CH^ClKCHpC^Cgroup, a -<CH₂)₂CH(CH₃)CH₂C»C- group, a -Cl^CHiClip (CHp^C.- group, a - (CH₂) ₂CH**CHOC group or a -(CH₂)₃ OC- group and X is hydrogen or alkvl optionally substituted by an hydroxy, acvloxy group or one to three halo atoms.

C, , alkoxy or 1-4

A compound of the formula (I) according to any of claims 1 to ¹ wherein A is a -CH-C1L-, -CH-CH- or a -C«C- group and X is a group n £ L '9 10

R and R are each selected from chloro, bromo

6)

R wherein R

-C-R¹⁰

1’ or methoxy or methyl optionally substituted by methoxy or fluoro.

A compound of the formula (IA):

APO 000 7 5 (C'C) R¹⁵(C5C) X⁹ q t (IA) wherein R is C₂ alkyl, alkenyl or alkynyl, each optional 1·.· substituted by, or methyl substituted by, cyano, halo, C₃ cycloalkvl optionally susubstituted by halo, alkoxy optionally substituted by halo, or a group S(0) as defined in claim 1 or R³ is m 3-10 cycloalkyl, cycloalkenyl or phenyl, each optionally substituted by alkoxy, alkyl optionally substituted by up to 3 halo

AJR/EB/28th June 1988

BAD ORIGINAL

1 23

Γ3 2 I i '· atoms, C, alkynvl. halo, cvano or a pmun S(0) R 2-4 ' m he rei nbe fore;

1 a 2 a

R ^c and P ' may be the same or different, and each is hydrogen, halo or an aliphatic group containing up to 3 carbon atoms optional)·.· substituted by halo, cyano, alkoxy or a group 5(0)^,R as defined hereinbefore; alkyl carbalkoxy containing up to 6 carbon atoms, or 1 a alkynyl substituted by tri-C^ alkylsilyl, or R is COO-C^ ^-alkyl, la a cyano, gem dimethyl, or R and R and the carbon atoms to which they are attached form a C, carbocyclic ring optionally substituted by halo, C^ alkyl or alkoxy or C^ alkenyl;

r] 5 £_{s n} single bond, a group wherein j_{s a} group optionally substituted by one to five methyl groups or halo atoms wherein w is oxygen, a group S(0) wherein p is 0, 1 or 2 or (CH l

P a wherein r is 1, 2 or 3 and the fragment (OC) X is attached to the a 15 * ^t or b position of the ring or R is a aliphatic chain containing between 1 and 8 carbon atoms in which one or two heteroatoms may be 15' interspersed, the chain and R being optionally substituted by one to four substituents which may be the same or different and are, each ,w independently selected from hydroxy, oxo, halo. C alkvl or alkoxy, each optionally substituted by up to 3 halo atoms.

1-acyloxy, epoxy, cyano, or a group SCO) a C’j alkylidene group, 4a a C, carbalkoxv group, l-o , wherein p’ is 0, I or 2 and R

IS 1.

alkyl, X‘ is selected from hydrogen, halo, C

1-10 hydrocnrbyl optionally substituted by an hydroxy, C^ alkoxy or C^ acyloxv 3. 5 3 ο a 7 group or one to three halo atoms, or X is a group Si R R R ^r or

Sn R^5a R^6a R^?a wherein R^5a,

6a 7a

R and R are the same or different and are each a hydrocarbyl group containing up to 6 carbon atoms optionally substituted by one to three halo, cyano, alkoxy, alkvlthio. acyloxy or carbalkoxy groups containing up to 6 carbon atoms or X is 1.4 ^alky¹= a group 0C0 wherein is C q is 0 or 1 and t is 1 nr 2; provided that the stun of q and t is not greater than 2;

AJR/EB/28th June 1988

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P32 EURO

Y and Y are the same or different and are each selected from oxygen and S(0)^, where n’ is Ο, 1 or 2; Z is Cl^O or 011^8(0)^,, wherein n'' is 0, 1 or 2, except that X³ cannot be hydrogen when q is 0. t is 1 and i_s a single bond.

7) A compound of the formula (IB):

«Ac>_t (IB) β X d 2d d X wherein R , R , R , X , Y, Y , Z and t are as hereinbefore defined in claim 5 and R¹^³ £_{s a} single bond or a group R¹* as hereinbefore defined in claim 5.

SfUUuudV

8) (IC) wherein R is a C _n non-aromatic hydrocarbyl group optionally substituted by cyano, halo, Cj alkoxy,or a group S(O)_mbR^J where R is Cj alkyl and m^ is 0, 1 or 2, or R¹* is phenyl optionally substituted by Cj alkoxy, Cj alkyl, C₂ alkynyl, halo, Cj haloalkyl, cyano or a group SiOj^bR^¹* as defined hereinbefore;

AJR/EB/28th June 1988

BAD ORIGINAL

1 30

P32 ΕΙ,Τ.ί’

R and R may be the same or different, and each is hydrogen. Iiilo, or a C. aliphatic group optionally substituted by halo, cvano. C

1 - i ¹ ' carbalkoxy, or alkoxy; a group S(O)_m,R wherein m' is 0, I or ?

and R* is C _χ alkyl; C alkynyl, cyano, gem dimethyl, or (' ,

1 b D ι ’ carbalkoxy, or R and R and the carbon atoms to which they are attached form a ? carbocyclic ring optionally substituted by halo, alkyl or alkoxy or C? j alkenyl;

8 9 20 8

R , R are as defined in claim 1 and R is a group R as defined in claim 1;

B is a single, bond, methylene or a C? aliphatic chain which may contain one or two heteroatoms and/or double bonds but not triple bonds interspersed in the chain and which may be substituted by one l.o four substituents which may be the same or different and are each independently selected from hydroxy, oxo, halo, alkyl, alkoxy, C, . acyloxy, epoxy, a C. alkylidene group, a C carbalkoxy group, haloalkyl or cyano;

D is a single bond or a group CH^O, CH^SiO)^ wherein p is 0,1 or 2. or D is a 1,2 cyclopropyl group;

Y and Y^ and Z are as defined in claim 1 provided that B cannot be a single bond or methylene group when D is a single bond.

9) A compound selected from;

1 -(Hex-5-vnyl)-9-propy1-2,6,7-trioxabicyclo[2.2.2]octane 1 -(Pent-4-ynyl)-4-propyl - 3 -trifluoromethyi-2,6,7-trioxabicyclo [ 2.2.2 ] oc tane l-(Hex-5-ynyl)-4-propyl-3-trifluoromethyi- 2,6,7 -trioxabicyclo [2.2.2]octane

1 -(Pent-4-ynyl}-4-propyl - 2,6,7 -trioxabicyclo[2.2.2]octane-3-carbonitrile

1 -(Hex-5-ynyl)-4-propyl - 2,6,7 -trioxabicyclo[2.2.2]octane-3-carbonitrile

AJR/EB/28th June 1988

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4 - (Cyclohexyl)-1-(pcnt-4-ynyl)-2,6,7-tr ioxab icyclo[2.2.2]octane 4-(Cyclohexy1)-1-(hex-5-ynyl)-2,6,7-trioxabicyclo[2.2.2]octane 4-t-Buty1-1-(hex-5-yny1)-2,6,7-trioxabicyclo[2.2.2]octane 4-t-Butyl -1-(6-trimethylsilylhex-5-ynyl) -2,6,7-trioxabicyclo [2.2.2]oc tane

1 -(4-Ethynylcyclohexyl)-4-propyl-2,6,7-trioxabicyclo[2.2.2]octane 4-1-Butyl-1-(4-ethynyIcyciohexyl)- 2,6,7-trioxabicyclo[2.2.2]octane (cis and trans isomers)

4-χ-Butyl-1-(3,3-dimethylbut-l-ynyl)-2,6,7 -trioxabicyclo[2.2.2 ] octane 1-(3,3 -Dimethylbut-1-ynyl)-4-propyl-2,6,7 -trioxabicyclo[2.2.2] octane-3-carbonitrile

4 -1-Butyl-1-(hex - 5-ynyl)-2,6-dioxa-7-thiabicyclo[2.2.2]octane 1-(Hex-5-ynyl)-4 - propyl - 2-oxa-6,7-dithiabi eye Lo[2.2.2]oc tane 1-(Hex-5-ynyl)-4-propyl-2,6,7-trithiabicyclo[2.2.2]octane 4-t-Butvl-l-[2-(prop-2-yny1thio)ethyl]-2,6,7-tri oxabicyclo[2.2.2 ] octane

4-Propyl-l-[2-(prop-2-yny1thio)ethyl )-2,6,7 -trioxabicyclo[2.2.2] octane

4-t-Buty1-1-[2-(prop-2-ynyloxy)ethyl )-2,6,7-trioxabicyclo[2.2.2] octane

4-Propyl-1-[2-(prop-2-ynyloxy)ethyl) -2,6,7-trioxabicyclo[2.2.2 ] octane-3-carbonitrile

1-(But-3 -ynyloxymethyl)-4-propyl-2,6,7-trioxabicyclo[2.2.2]octane 4-t-Buty1-1-(but - 3-ynyloxymethyl)-2,6,7-trioxabicyclo[2.2.2]octane 1-(But - 3-ynyloxymethyl-4 - propyl-2,6,7-trioxabicyclo[2.2.2]octane3- carbonitrile

4- t-Butyl-1-(hept-6-ynyl)-2,6,7-trioxabicyclo f 2.2.2]oc tane 1 - (Hept-6-ynyl) - 4-propyl - 2,6,7 - trioxabicyclo[2.2.2#] octane

4-Butyl-1-(hex-5-ynyl)- 2,6,7-trioxabicyclo[2.2.2]octane-3-carbonitrile 1-(Hex-5-ynyl)-4 -(2-methylprop-2-enyl)-2,6,7-trioxabicyclo[2.2.2] octane -3-carbonitrile

1 -(Hex-5-ynyl)-4-(prop-2-enyl)-2,6,7-trioxabicyclo[2.2.2]octane-3-carbonitrile

1 -(But-3-ynyloxymethvl)-4 -(prop-2-enyl)-2,6,7-trioxabicyclo[2.2.2]octane -3-carbonitrile

APO00075

AJR/EB/28th June 1988

BAD ORIGINAL £

1 32

P32 E' RO

4 -(But - 3-enyl) -1 -(hex- 5 -yny 1) - 2,6,7 -tr ioxabicyclo[2.2.2;octane - 3 carbonitrile

4 -t-Butyl-1-(4-me thy1hex - 5 -ynyl)-2,6,7 -trioxabicyclo[2.2.2]oc tane 1 -[2-( But - 3 -ynyloxy)e thy1]-4-propyl-2,6,7-tr ioxabicyclo[2.2,2 J oc tane 1-[1-(But-3-ynyloxy)ethyl)-4-propyl-2,6,7-trioxabicyclo[2.2.2] octane 1-(But-3-ynylthiomethyl)-4-propyl-2,6,7-trloxabicyclo[2.2.2]octane 4 -t-Butyl-1-(but-3-ynylthiomethyl)- 2,6,7 -1rioxabieyelo{2.2.2]octane 4-Butyl-1-(hex-5-ynyl)- 2-oxa-6,7-dithiablcyclo[2.2.2]octane

4 -1-Butyl-1-(hex-5-ynyl)-2-oxa-6,7-dithiablcyclo[2.2.2}octane

4-t-Butyl-l-(hex-5-ynyl)-2,6,7-trioxabi.cyclo[2.2.2]octane-3-carbonitrile

1-(Hex - 5-ynyl)-4-isobutvl- 2,6,7 -trioxabicyclo[2.2.2]octane - 3 - carbo ni tr ile

4 - Ethoxymethyl-1 -(hex - 5 -ynyl)- 2,6,7 -trioxabicyclo[2.2.2]octane- 3-carb onitrile

1-(1-Me thylhex-5-yny1)-4-propyl- 2,6,7 -trioxabicyclo[2.2.2]octane

1-(1-Methylhex-5-ynyl)-4-propyl-2,6,7-trioxabicyclo[2.2.2]octane-3carbonitrile

Methyl 7-(4-propyl-2,6,7-trIoxabicyclo[2.2.2]oc t-1-y 1)hept- 2 -ynoate 1 -(Hex-5-ynyl) -4-phenyl - 2,6,7 -trioxabicyclo[2.2.2]octane 1-(Hex-5-ynyl)-4-isobutyl-2 - oxa - 6,7-dithiabicyclo[2.2.2]octane 1 -(Hex-5-ynyl) -3-methyl-4-propyl-2-oxa-6,7-di thtabicyclo[2.2.2]octane 1-(3-Methylhex-5-ynyl)-4-propy1-2,6,7-trioxabicyclo[2.2.2]octane - 3 carboni trlie

1-(2-Methylhex-5-ynyl)-4-propyl- 2,6,7 -trioxabicyclo[2.2.2]octane-3carbonitrile

1-(3,3- Dimethylbut-1-yny1)-4 - isobutyl - 2,6,7 -1 r ioxabicyclo[2.. 2 ] oc tane

-3-carbonitrile

1 -(But-3-ynyloxymethy1)-4-propyl- 2,6,7 - tri thiabicyclo[2.2.2]octane 1 - ( trans-4(e)-ethynylcyclohexyl)-4-propyl- 2,6,7 -trioxabicyclo[2.2.2] octane-3-carbonitrile

4-Propyl -1-[(E/Z)-6-(trlmethylsilyl)hex-3 -en-5-ynyl]- 2,6,7 -trioxabicyclo[2.2.2]octane-3-carbonitrile

1 -[(E/Z)-Hex-3 -en-5-ynyl]-4-propy1-2,6,7 -trioxabicyclo[2.2.2]octane -3-carbonitrile (E:Z - 1:2)

AJR/EB/28th June 1988

BAD ORIGINAL Ά

133

Γ3 2 EURO

L-[(E/Z)- 7-Methoxyhept- 3-en-5-ynyl]-4-propy1 - 2,6,7 -1rioxabi cyclo [2.2.2]ortane-3 - carbonίtrίle (E:Z - 1:2)

1 -[(E/Z)- 7-Hydroxyhept-3-en-5-ynyl·]-4-propyl-2,6,7-1rioxabicyclo [2.2.2[octane-3-carbonitrile

4-t-Butyl-1-[(E)-hex-J-en-5-yny1]- 2,6,7 -trioxabicyc1o[2.2.2]octane 3- carbonitrile

4- Propyl-2,6,7 -trioxabi cyclo[2.2.2]octane - 1-carboxaIdehyde oxime 0(prop- 2-ynyl)ether

1-(Hex-5-ynyl)-4-isobutyl- 2,6,7 -trithiabicyclo(2.2.2]octane 1 -(Hex-5-ynyl)-4-phenyl- 2-oxa-6,7-dithiabicyclo[2.2.2]octa+ie 4-Propyl-1 -(4-methylhex-5-ynyl)-2,6,7-trioxabicyclo[2.2.2]octane-3carboni trile

4 - Ethyl -1 -(hex - 5 -yny]) - 2.6,7 -1 r i th i abicyclo[2.2.2]oc t ane ]- (Hex -S-ynyl)-4- phony1 - 2,6,7 -tri oxabicyclo[2.2.2[octane-3 - carbon i tri le

4 -Cyclopropylmethyl-L-(hex-5-ynyl)-2,6,7-trioxabicyclo[2.2.2]octane

- 3-carbonitrile

4 - Isobutyl-1-(3-methylhex-5-ynyl)- 2,6,7 -trioxabicyclo[2.2.2]octane -3-carbonitrile

1-[(s)- 3-Methylhex-5-ynyl]-4-propyl-2,6,7-trioxabicyclo[2.2.2]octane -3-carbonitrile

1-(2-Methylhex- 5-ynyl)-4 -(prop-2 -enyl)- 2,6,7 -trioxab i cyclo[2.2.2] octane-3- carbonitrile

4-t-Buty1-1-(3,3 - dime thylbutyl)- 2,6,7 -trioxabicyclo[2.2.2]oc tane 1-(3.3 - Dimethylbutyl)-4 - propyl - 2,6,7 -trioxabicyclo[2.2,2]octane - 3 -ca rbonitrile l-[(E)-3,3-Dimethylbut-1-enyl]-4-propyl-2,6,7-trioxabicyclo[2.2.2 1 octane-3-carbonitrile

1-(t-Butylthiomethyl)-4-propyl-2,6,7 -trioxabicyclo[2.2.2]octane -3carbonitrile

1 -[z)-1-Fluoro-3,3-dimethylbut-1-enyl]-4-propyl- 2,6,7 -trioxabicyclo [2.2.2]octane-3-carbonitrile

1-(Hept-5-ynyl)-4-propyl-2,6,7 -trioxabicyclo[2.2.2]octane

S Z 0 0 U 0 dV

AJR/EB/28th June 1988

BAD ORIGINAL A

1 34

Γ)? 1-r ’V) .Λ pns t i c i da 1 formti 1 nt. i οn comprising a compo'nut <>{ ; In iormula ι I · » defined according to anv of the preceding claims in admixture -/1 one or more carriers or diluents.

11) Λ pesticidal formulation according to claim 10 which additiouallv contains a synergist or potentiator.

1.2) A pesticidal formulation according to either claim 10 or claim 11 which additionally contains one or more pcsticidally active ingredients, attractant.s , repellents, bacteriocides , fungicides and/or anl.hel mint: ics .

1!) A compound ol the formula (I) for use in human or vi lerinatv med i,. i i,. .

O id) A method for the control of arthropod or helminth pests hjch comprises administering to the arthropod or helminth or their environment an effective amount of a compound of the formula <1.; as > prepared according to anv one of the preceding, claims.

15) A method for the control of pesticidal infestations on plants and/or stored products and/or an environment which comprises administering, jh effective amount of a compound of the formula (I) as defined according to any one of the preceding claims to the plant and/or stored product and/or an environment susceptible to pest infestation.

16) A process for the manufacture of a compound of the formula < I ) as defined according to claim 1 which comprises:

i) for the production of compounds wherein Y and are oxygen and Z is CI! 0:

the cyclisation of a compound of the formula (II):

AJR/EI5/28th June 1988

1 35 wherein R to R , Λ and X arc as defined according to claim 1 the presence of an acid catalyst or;

b) for the production of compounds wherein A contains a terminal OC fragment; the reaction of a compound HOC-X with a compound of the formula (V):

A¹-?

wherein R to R⁷ are as defined according to claim 1, A^C~C forms the group A and l3 is a leaving group or;

when X is hydrogen, the reaction of a strong base with compound of the formula (VII):

AP 0 0 0 0 7 5

A¹!?

wherein R to R and A are as defined according to claim 1 and Q is a group capable of conversion into an ethynvl group or;

when AX contains a CH=CH-C=C-X linkage, the reaction of a compound HOC-X with a compound of the formula (IX):

A -CH-CH-hal

AJR/EB/28th June 1988

BAD ORIGINAL &

wherein R to R , λ and hal are as defined according, to claim 1 and A^-HH-C1I-C^C-X is a group AX as defined accord i n r to claim 1 or;

for the production of compounds wherein A contains a -CONH3 group, the reaction of a compound NH^CH^A X with a compound of the formula (X):

ru wherein R to R and X and Aik are as defined according to 2 9 claim 1, Aik is a group alkyl and A COMHCH^A X is a group A-X as defined according to claim 1 or;

d) for the production of compounds wherein A contains a -CGOgroup, the reaction of a compound XA^CIE, Hal with a compound of the formula (XI):

or an alkali metal salt thereof, wherein R to R and X arc as defined according to claim 1, Hal is halogen and 2 3 .A CO^CI^A X is a group AX is defined according to claim 1 or;

AJR/EB/28th June 1988

BAD ORIGINAL ft

13 7 for the production of compounds wherein A i-'’ntaii group, the reaction of a compound '<( compound of the formula (XII):

. c'i -·>;·

Cl!₂ hai wherein R to R , X and hal are as defined according to claim 2 3

1 and A ONOCH^A X is a group AX as defined according to claim 1 or;

f) for the production of compounds wherein A contains ii group 3

-0C0-, the reaction of a compound XA CO^ll with a compound of the formula (XIII);

a²ch„oh wherein R to R and X are as definedaccording to claim 1 and 2 3

A CH^OCOA X is a group AX as defined according to claim 3 ii) for the production of compounds wherein n’ is 0

Y¹ is 0 or S, Y is 0 or S, Z is Cl^S or CH.,0, the reaction oi a compound (AlkO)₇C~CA\ with a compound of the formula XIV);

----YH

AP 0 n 0 0 7 5

A.IR/r.P,/2Hfh June 1988

BAD ORIGINAL ft

1 38

Γ33 8 wherein R to !'/ , Λ, X, Y, Y and Z arc as defined acrniilipr. I., claim I ami Aik js a Cj alkyl group or;

iii) for the production of compounds wherein Z^CH.^S or CH„U and Y and

1 . 2 ' ^λ Y are sulphur the reaction of a compound L AX with a compound of the formula (XV):

W

3»

33* <- Λί

- % *·*>

wherein R to R‘\ A and X are as defined according to claim 1, Z' 2 is CH^S or CH^O and L is a leaving group, or:

iv) for the production of compounds wherein Y, Y^ are 0 and Z is CH^Cl·^ . the reaction of a compound of the formula (XVI) with wherein R to R . A and X are as hereinbefore defined or;

the conversion of a compound of the formula (1) into another compound of the formula (I).

17) A novel chemical intermediate involved in the process of claim 16,

AJR/EB/28th June 198«

BAD ORIGINAL ft

1 39

Γ32 EURO

18) A method for the control of pesticidal infestations on animals which comprises administering an effective amount of a compound of the formula (I) as defined according to any one of the preceding claims to the animal.