ZA200506398B - Optically active bisoxazoline, compounds, process for production of the same and use thereof - Google Patents

Optically active bisoxazoline, compounds, process for production of the same and use thereof Download PDF

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ZA200506398B
ZA200506398B ZA200506398A ZA200506398A ZA200506398B ZA 200506398 B ZA200506398 B ZA 200506398B ZA 200506398 A ZA200506398 A ZA 200506398A ZA 200506398 A ZA200506398 A ZA 200506398A ZA 200506398 B ZA200506398 B ZA 200506398B
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naphthyl
bonded
group
substituted
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ZA200506398A
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Itagaki Makoto
Masumoto Katsuhisa
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Sumitomo Chemical Co
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  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
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Description

2b 3 ERS y 1
OPTICALLY ACTIVE BISOXAZOLINE COMPOUNDS, PROCESS FOR
PRODUCTION OF THE SAME AND USE THEREOF
Technical Field
The present invention relates to optically active bisoxazoline compounds, process for production of the same and use thereof.
Background Art
Methods for producing optically active cyclopropane compounds, which are very important compounds as synthesis intermediates of agricultural chemicals such as synthesized pyrethroid type insecticides, pharmaceuticals, etc., and whose representative example is (+)-2,2-dimethyl-3-(2- methyl-l-propenyl)cyclopropanecarboxylic acid, from prochiral olefins have been known as an asymmetric reaction using an optically active bisoxazoline compound as a ligand (e.g. JP 11-171874 A, Tetrahedron Lett., 32, 7373 (1991)).
These methods are relatively good in the diastereoselectivity (trans-isomer/cis-isomer ratio) and enantioselectivity. However, from an industrial viewpoint, it 1s desired to further improve the yield of the desired optically active cyclopropane compounds.
Disclosure of the Invention i
According to the present invention, an optically active bisoxazoline compound having naphthyl group as an asymmetric synthesis catalyst component can be easily obtained, and an optically active compound can be obtained at a high yield by using an industrially advantageous asymmetric catalyst comprising the optically active bisoxazoline compound and a copper compound.
That is, the present invention provides an optically active bisoxazoline compound represented by the formula (1):
RA RS
R! = Rr! > Lose 2
R® R® wherein R- and R? are the same, and each represents a Ci-¢ alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted phenyl group, or R! and
R? are bonded each other together with the carbon atom of the oxazoline ring to which they are bonded to form a ring;
Rr? represents a substituted or unsubstituted naphthyl group (preferably a l-naphthyl group or a 2-naphthyl group); R’ and R’> are the same, and each represents a hydrogen atom or a Ci-¢ alkyl group, or R® and R® are bonded each other together with the carbon atom to which they are bonded to form a cycloalkyl ring having 3 to 6 carbon atoms; and *
represents an asymmetric center; a process for production of the same and use thereof.
Best Mode for Carrying Out the present invention
First, the optically active bisoxazoline compound represented by the formula (1) (hereinafter, simply referred to as the optically active bisoxazoline compound (1)), which is a novel compound, will be illustrated.
Examples of the C;_¢ alkyl group represented by R! and
R° include straight chain or branched alkyl groups such as a methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, n- pentyl, and n-hexyl group, and as the ring formed by bonding R' and R? each other together with the carbon atom of the oxazoline ring to which they are bonded, cycloalkyl rings having 3 to 7 carbon atoms can be exemplified.
Examples of the cycloalkyl ring include a cyclopropane ring, a cyclobutane ring, a cyclopentane ring, a cyclohexane ring, and a cycloheptane ring.
Examples of the substituted or unsubstituted phenyl group represented by R' and R? include an unsubstituted phenyl group; a phenyl group substituted with a Cj-¢ alkyl such as a 3-methylphenyl and 4-methylphenyl group; and a phenyl group substituted with a C:.¢ alkoxy group(e.g. a methoxy, ethoxy, propoxy, butoxy, pentyloxy, and hexyloxy group) such as a 2-methoxyphenyl, 3-methoxyphenyl, and 4-
methoxyphenyl group.
As the substituted or unsubstituted aralkyl group, there is, for example, a Cj;-¢ alkyl group substituted with the above substituted or unsubstituted aryl group.
Examples thereof include a benzyl, 2-methylbenzyl, 3- methylbenzyl, 4-methylbenzyl, 2-methoxybenzyl, 3- methoxybenzyl, 4-methoxybenzyl, l-naphthylmethyl, and 2- naphthylmethyl group.
In the formula representing the optically active bisoxazoline compound (1), as the substituted or unsubstituted naphthyl group represented by R>, in addition to an unsubstituted l-naphthyl or 2-naphtyl group, there are, for example, a l-naphthyl or 2-naphtyl group substituted with at least one C;_¢ alkyl or Ci.¢ alkoxy group.
Examples of the C;.¢ alkyl or Ci.¢ alkoxy group include those exemplified with respect to the substituent R!' or RZ.
Specifically, there are, for example, a 4-fluoro-l-naphthyl, 2-methyl-l-naphthyl, 4-methyl-l-naphthyl, 2-methoxy-1- naphthyl, 2-ethoxy-l-naphthyl, 4-methoxy-l-naphthyl, 2,4- dimethoxy-l-naphthyl, 2-naphthyl, 7-methyl-2-naphthyl, 1-n- propyl-2-naphthyl, 6-methoxy-2-naphthyl, and 3,8-dimethoxy- 2-naphthyl group. Among them, l-naphthyl and 2-naphthyl group are preferable.
Examples of the C:.¢ alkyl group represented by R* and
R® include a Ci.a alkyl group such as a methyl, ethyl, n-
d propyl, and isopropyl group, and a butyl, pentyl, and hexyl group. As the ring formed by bonding R! and R® each other together with the carbon atom of the oxazoline ring to which they are bonded , cycloalkyl rings having 3 to 6 carbon atoms can be exemplified. Examples of the cycloalkyl ring include a cyclopropane ring, a cyclobutane ring, a cyclopentane ring, and a cyclohexane ring.
Preferably, R* and R® represent a hydrogen atom, a Cj-3 alkyl group or a cycloalkyl ring having 3 to 6 carbon atoms formed by bonding R! and R® each other together with the carbon atom of the oxazoline ring to which they are bonded, and more preferably, they represent a C;_3 alkyl group.
In the bisoxazoline compounds represented by the formula (1), there are two asymmetric carbon atoms represented by * and the compounds wherein both asymmetric carbon atoms are (S), or (R) configurations are preferably used.
Specific examples of such optically active bisoxazoline compounds (1) include bis [2-[(48S)-(1- naphthyl) -5, 5-dimethyloxazoline] Jmethane, bis[2-[(4S)-(1- naphthyl) -5, 5-diethyloxazoline] Jmethane, bis[2-[(4S)-(1- naphthyl) -5, 5-di-n-propyloxazoline] Jmethane, bis[2-[(4S)- (l-naphthyl)-5, 5-di-n-butyloxazoline] methane, bis[2-[(49)- (l1-naphthyl) -5, 5-diisobutyloxazoline] Jmethane, bis[2-[(4S)-
J
(1-naphthyl)-5,5-di-n-pentyloxazoline] Jmethane, bis [2- [ (4S) -(l-naphthyl)-5,5-di-n-hexyloxazoline] methane, bis[2- [ (4S) -(1l-naphthyl)-5,5~-dibenzyloxazoline] Imethane, bis[2- ( (4S) -(1l-naphthyl)-5,5-di (2-methylbenzyl)oxazoline] Jmethane, bis{2-[(4S)-(1-naphthyl)-5,5-di (3- methylbenzyl)oxazoline] Jmethane, bis[2-[(4S)-(l-naphthyl)- 5,5~di (4-methylbenzyl)oxazoline] Jmethane, bis[2-[(4S)-(1- naphthyl) -5,5-di (2-methoxybenzyl) oxazoline] methane, bis[2- [(4S)-(l-naphthyl)-5,5-di (3- methoxybenzyl)oxazoline] methane, bis[2-[(4S)-(l-naphthyl)- 5,5-di(4-methoxybenzyl) oxazoline) Jmethane, bis[2-[(4S)-(1- naphthyl) -5,5-di (l1-naphthylmethyl) oxazoline] methane, bis[2-[(4S)~-(l-naphthyl)-5,5-di(2- naphthylmethyl)oxazoline] Jmethane, bis[2-[(4S)-(1- naphthyl) -5, 5-diphenyloxazoline] Jmethane, bis[2-[(4S)-(1- naphthyl) -5,5-di (3-methylphenyl) oxazoline] Jmethane, bis[2-[(4S)~-(l-naphthyl)-5, 5-di (4- methylphenyl)oxazoline] Jmethane, bis[2-[(4S)-(l-naphthyl)- 5,5-di (2-methoxyphenyl) oxazoline] lmethane, bis[2-[(4S)-(1- naphthyl) -5, 5-di (3-methoxyphenyl)oxazoline] Jmethane, bis[2- [ (4S) ~(l-naphthyl)-5,5-di (4- methoxyphenyl) oxazoline] Jmethane, bis{2-{spiro[(4S)-(1- naphthyl)oxazoline-5, 1’ -cyclopropane]) Jmethane, bis[2- [spiro[ (4S)-(l-naphthyl)oxazoline-5,1'- cyclobutane] ]]lmethane, bis[2-[spirol (4S)-(1-
naphthyl)oxazoline-5,1’ -cyclopentane] ] methane, bis [2- [spiro (4S)-(l-naphthyl)oxazoline-5,1’- cyclohexane] ] Jmethane, bis[2-[spiro[ (4S)-methyloxazoline- 5,1" ~cycloheptane] ] methane, 2,2-bis{2-[(4S)-(1l-naphthyl)-5, 5- dimethyloxazoline] lpropane, 2,2-bis[2-[(4S)-(l-naphthyl)- 5,5-diethyloxazoline] ]propane, 2,2-bis[2-[(4S)-(1- naphthyl) -5,5-di-n-propyloxazoline] propane, 2,2-bis[2- ((4S)~-(l-naphthyl)-5,5-di-n-butyloxazoline]]propane, 2,2- bis[2-[(4S)-(1l-naphthyl)-5,5-diisobutyloxazoline] propane, 2,2-bis[2-[(4S)-(l-naphthyl)-5,5-di-n- pentyloxazoline] ]propane, 2,2-bis[2-[(4S)-(l-naphthyl)-5,5- di-n-hexyloxazoline] ]propane, 2,2-[2-bis[2-(4S)-(1- naphthyl) -5, 5-dibenzyloxazoline] propane, 2,2-[2-bis[2- bis (4S) -(l-naphthyl)-5,5-di(2- methylbenzyl)oxazolinel propane, 2,2-bis{2-[(4S)-(1- naphthyl) -5, 5-di(3-methylbenzyl)oxazoline] ]propane, 2,2- bis[2-{(4S)-(1-naphthyl)-5,5-di (4- methylbenzyl) oxazoline] Jpropane, 2,2-bis{2-[(4S)-(1- naphthyl) -5, 5-di(2-methoxybenzyl)oxazoline] propane, 2,2- bis[(4S)-(l-naphthyl)-5,5-di(3- methoxybenzyl)oxazoline] ]propane, 2,2-bis[2-[(4S)~-(1- naphthyl) -5,5-di(4-methoxybenzyl)oxazoline] }propane, 2,2-pbis[2-[(45)~-(l-naphthyl)~-5,5-di(1- naphthylmethyl)oxazoline] ]propane, 2,2-bis{[(4S)-(1-
naphthyl) -5, 5-di (2-naphthylmethyl)oxazoline] ] propane, 2,2- bis[(4S)-(1-naphthyl)-5, 5-diphenyloxazoline]]propane, 2,2- bis[2-[(4S)-(1l-naphthyl)-5,5-di (3- methylphenyl)oxazoline]]propane, 2,2-bis[2-[(4S)-(1- naphthyl) -5, 5-di (4-methylphenyl) oxazoline] propane, 2,2-
bis[2-[(4S)~-(1l-naphthyl)-5,5-di (2-
methoxyphenyl) oxazoline] Jpropane, 2,2-bis[2-{(4S)-(1- naphthyl) -5, 5-di (3-methoxyphenyl) oxazoline] ]propane, 2,2- bis[2-[(4S)~-(1l-naphthyl)-5,5-di (4-
methoxyphenyl) oxazoline] ]propane, 2,2-bis[2-{spiro[(4S)-(1- naphthyl) oxazoline~5, 1’ ~cyclopropane]] lpropane, 2,2-bis[2- [spiro( (4S) -(1l-naphthyl)oxazoline=-5,1"- cyclobutane] ] ]propane, 2,2-bis[2-[spiro[(4S)-(1- naphthyl) oxazoline-5, 1’ -cyclopentane]]lpropane, 2,2-bis([2-
[spiro (4S) -(l-naphthyl)oxazoline-5,1’- cyclohexane] ] propane, 2,2-bis[2-[spiro[(4S)- methyloxazoline-5,1’ -cycloheptane]]] propane,
3,3-bis[2-[(48)~(l-naphthyl)-5, 5- dimethyloxazoline]]pentane, 3,3-bis[2-[(4S)-(1l-naphthyl)-
5,5-diethyloxazoline] ]pentane, 3,3-bis[2-[(4S)-(1- naphthyl) -5, 5-di-n-propyl-2-oxazoline] ] pentane, 3,3-bis[2- [(4S)-(l-naphthyl)-5,5-di-n-butyloxazoline] pentane, 3, 3- bis[2-[(4S)-(l-naphthyl)-5,5~diisobutyloxazoline] pentane, 3,3-bis[2-[(4S)-(1l-naphthyl)-5, 5-di-n-
pentyloxazoline]]pentane, 3,3-bis[2-[(4S)-(l-naphthyl)-5, 5-
di-n-hexyloxazoline] Jpentane, 3,3-bis[2-[(4S)-(1l-naphthyl)- 5,5-dibenzyloxazoline] pentane, 3,3-bis[2-bis[(48)-(1- naphthyl) -5,5~di(2-methylbenzyl) oxazoline] lpentane, 3,3- bis [2-[(4S)-(1l-naphthyl)-5,5-di (3-
methylbenzyl)oxazoline] ]pentane, 3,3-bis[2-[(4S)-(1- naphthyl) -5,5-di (4-methylbenzyl) oxazoline] Jpentane, 3, 3- bis{2-[(4S)-(l-naphthyl)-5,5-di (2- methoxybenzyl) oxazoline] Jpentane, 3,3-bis[(4S)-(1- naphthyl) -5, 5-di (3-methoxybenzyl) oxazoline] lpentane, 3,3-
bis[2-[(4S)-(1-naphthyl)-5,5-di(4- methoxybenzyl)oxazoline] pentane,
3,3-bis[2-[(4S)~-(l-naphthyl)-5,5-di(1- naphthylmethyl)oxazoline]]pentane, 3,3-[2-bis[(48)-(1- naphthyl) -5,5-di (2-naphthylmethyl) oxazoline] ]pentane, 3,3-~
[2-bis[(4S)-(1-naphthyl)-5, 5-diphenyloxazoline] ]pentane, 3,3-bis[2-[(4S)-(l-naphthyl)-5, 5~-di (3- methylphenyl) oxazoline] Jpentane, 3,3-bis[2-[(4S)-(1- naphthyl) -5, 5-di (4-methylphenyl) oxazoline] lpentane, 3, 3- bis[2-[(4S)-(1-naphthyl)-5, 5-di (2-
methoxyphenyl) oxazoline] ]pentane, 3,3-bis{[2-[(4S)-(1- naphthyl) -5, 5-di (3-methoxyphenyl) oxazoline] pentane, 3,3- bis[2-[(4S)-(1l-naphthyl)-5,5-di(4- methoxyphenyl) oxazoline] ]pentane, 3,3-bis[2-[spiro[ (4S)-(1- naphthyl)oxazoline-5, 1’ -cyclopropane]] ]pentane, 3,3-bis[2-
[spiro[(4S)-(l-naphthyl)oxazoline-5,1"-
cyclobutane] ] Jpentane, 3,3-bis[2-[spiro[ (4S)-(1- naphthyl) oxazoline-5,1’ -cyclopentane) ] pentane, 3,3-bis[2- [spiro[ (4S)-(l-naphthyl)oxazoline-5,1"'- cyclohexane] ]]lpentane, 3,3-bis[2-[spiro[(4S)- methyloxazoline-5,1’ -cycloheptane]]]pentane, 4,4-bis{2-{(4S8)-(l-naphthyl)-5,5- dimethyloxazoline] heptane, 4,4-bis[2-[(4S)-(l-naphthyl)-
S5,5-diethyl-2-oxazoline] heptane, 4,4-bis[2-[(4S)-(1- naphthyl) -5,5-di-n-propyloxazoline} heptane, 4,4-bis[2- [ (4S) -(l-naphthyl)~5, 5-di-n-butyloxazoline] lheptane, 4,4- bis[2-[(4S)-(1l-naphthyl)-5,5-diisobutyloxazoline] heptane, 4,4-bis[2-[(4S)-(l-naphthyl)-5,5-di-n- pentyloxazoline] ]heptane, 4,4-[2-bis[2-[(4S)-(1l-naphthyl)- 5,5-di-n-hexyloxazoline] heptane, 4,4-bis[2-[(4S8)-(1- naphthyl) -5, 5-dibenzyloxazoline) Jheptane, 4,4-bis[2- bis (4S) ~-(1l-naphthyl)-5,5-di (2- methylbenzyl)oxazoline] Jheptane, 4,4-bis[2-[(4S)-(1- naphthyl) -5,5-di (3-methylbenzyl) oxazoline] Jheptane, 4,4-[2- [ (4S) = (l-naphthyl)~-5, 5-di (4-methylbenzyl) oxazoline] heptane, 4,4-bis[2-[(4S)-(l-naphthyl)-5,5-di(2- methoxybenzyl) oxazoline] | heptane, 4,4-[2-bis[(4S)-(1- naphthyl) -5,5-di (3-methoxybenzyl) oxazoline] } heptane, 4,4- bis[2-[(4S)-(1l-naphthyl)-5,5-di (4- methoxybenzyl) oxazoline] ] heptane, 4,4-bis[2-[(4S)-(1l-naphthyl)-5,5-di(1-
pe naphthylmethyl)oxazoline]lheptane, 4,4-[2-bis[(4S)-(1- naphthyl) -5,5-di (2-naphthylmethyl) oxazoline] Jheptane, 4,4- bis[ (4S) - (1-naphthyl)-5, S-diphenyloxazoline] heptane, 4,4- bis[2~[(4S)-(l-naphthyl)-5,5-di (3-
methylphenyl)oxazoline] Jheptane, 4,4-bis[2-[(4S)-(1- naphthyl) -5,5-di (4-methylphenyl) oxazoline] heptane, 4, 4- bis[2-[(4S)-(1l-naphthyl)-5,5-di(2- methoxyphenyl)oxazoline] Jheptane, 4,4-bis[2-[(4S)-(1- naphthyl) -5, 5-di (3-methoxyphenyl)oxazoline] Jheptane, 4,4-
bis[2-[(4S)-(l-naphthyl)-5,5-di (4- methoxyphenyl) oxazoline] Jheptane, 4,4-bis[2-[spiro[ (4S)-(1- naphthyl) oxazoline-5,1’ -cyclopropane] ] J heptane, 4,4-bis[2- [spiro[(48)-(l-naphthyl)oxazoline-5,1"'- cyclobutane] ]lheptane, 4,4-bis[2-[spiro[(4S)-(1-
naphthyl) oxazoline-5,1’ -cyclopentane]] Jheptane, 4,4-bis[2- [spiro[ (43) -(l-naphthyl)oxazoline-5,1’- cyclohexane] ] heptane, 4,4-bis[2-[spiro[(4S)- methyloxazoline-5,1’ -cycloheptane]] heptane,
1,1-bis[2-[(4S)-(1-naphthyl)-5, 5-
dimethyloxazoline]]cyclopropane, 1,1-bis[2-[(4S)~-(1- naphthyl) -5, 5-diethyloxazoline] ] cyclopropane, 1,1l-bis[2-
[ (45) -(1-naphthyl)-5,5-di-n-propyl-2- oxazoline]]cyclopropane, 1,1-bis{2-[(4S)-(l-naphthyl)-5,5- di-n-butyloxazoline] ]Jcyclopropane, 1,1-bis{2-[(4S)-(1-
naphthyl) -5, 5-diisobutyloxazoline]]cyclopropane, 1,1l-bis[2-
[ (4S) - (1-naphthyl)-5,5-di-n-pentyloxazoline] ]cyclopropane, 1,1-bis[2-[(4S)-(1l-naphthyl)-5,5-di-n- hexyloxazoline] cyclopropane, 1,1-bis[2-[(4S)-(l-naphthyl)-
S,5-dibenzyloxazoline))cyclopropane, 1,1-bis[2-[(4S)-(1- naphthyl) -5,5-di(2-methylbenzyl) oxazoline] Jcyclopropane, 1,1-bis[2~[(4S)-(1l-naphthyl)-5,5-di (3- methylbenzyl)oxazoline] cyclopropane, 1,1-bis[2-[(4S)-(1- naphthyl) -5,5-di (4-methylbenzyl) oxazoline] ]cyclopropane, 1,1-bis{2-[(4S)~-(1-naphthyl)-5, 5-di (2- methoxybenzyl) oxazoline] ]Jcyclopropane, 1,1-bis[(4S)-(1- naphthyl) -5,5-di (3-methoxybenzyl) oxazoline] ]cyclopropane, 1,1-bis[2-[(4S)~-(l-naphthyl)-5,5-di (4- methoxybenzyl) oxazoline] Jcyclopropane, 1,1-bis[2-[(4S)~-(1l-naphthyl)-5,5-di (1- naphthylmethyl)oxazoline] Jcyclopropane, 1,1-bis[2-[(4S)-(1- naphthyl) -5,5-di (2-naphthylmethyl)oxazoline])cyclopropane, 1,1-bis{2-[(4S)-(l1-naphthyl)-5, 5- diphenyloxazoline]]cyclopropane, 1,1-bis[2-[(4S)-(1- naphthyl) -5,5-di (3-methylphenyl)oxazoline]]cyclopropane, 1,1-bis[2-[(4S)-(1-naphthyl)-5,5-di (4- methylphenyl) oxazoline] ]cyclopropane, 1,1-bis[2-[(4S)-(1- naphthyl) -5,5-di (2-methoxyphenyl) oxazoline] cyclopropane, 1,1-bis[2-[(4S)-(1-naphthyl)-5,5-di (3- methoxyphenyl)oxazoline] ]Jcyclopropane, 1,1-bis([2-[(4S)-(1- naphthyl) -5,5-di ({-methoxyphenyl) oxazoline] )}cyclopropane,
1l,1-bis(2~[spiro[(4S)-(l-naphthyl)oxazoline-5,1'- cyclopropane] ]lcyclopropane, 1,1l-bis[2-[spiro[(4S)-(1- naphthyl) oxazoline-5,1’ -cyclopentane]] cyclopropane, 1,1- bis[2-[spiro[ (4S)-methyloxazoline-5,1'~ cycloheptane]]lcyclopropane, 1,1-bis[2-[(4S)-(l-naphthyl)-5, 5- dimethyloxazoline] Jcyclobutane, 1,1-bis[2-[(4S)~-(1- naphthyl) -5,5-diethyloxazoline] ]cyclobutane, 1,1l-bis[2- [ (4S) -(l-naphthyl)-5,5-di~-n-propyl-2-oxazoline]]cyclobutane, 1,1-bis[2-[(4S)-(1-naphthyl)-5, 5-di-n- butyloxazoline]] cyclobutane, 1,1-bis([2-[(4S)-(l1-naphthyl)- 5,5-diisobutyloxazoline]]cyclobutane, 1,1-bis[2-[(4S)-(1- naphthyl) -5,5-di-n-pentyloxazoline])cyclobutane, 1, 1l-bis[2- [ (4S) = (1-naphthyl)-5,5-di~-n~-hexyloxazoline]]cyclobutane, 1,1-bis[2-[(4S)~-(1-naphthyl)-5, 5- dibenzyloxazoline) lcyclobutane, 1,1l-bis[2-[(48)-(1- naphthyl) -5, 5-di (2-methylbenzyl) oxazoline} )cyclobutane, 1,1-bis{2-[(4S)-(1-naphthyl)-5,5-di (3- methylbenzyl)oxazoline]]cyclobutane, 1,1-bis([2-[(4S)-(1- naphthyl) -5,5-di (4-methylbenzyl)oxazoline] cyclobutane, 1,1-bis[2-[(4S)-(1-naphthyl)-5, 5-di (2- methoxybenzyl)oxazoline]]cyclobutane, 1,1-bis[(4S)-(1- naphthyl) -5, 5-di (3-methoxybenzyl)oxazoline]]cyclobutane, 1,1-bis[2-[(4S)-(l-naphthyl)-5,5-d1i (4- methoxybenzyl)oxazoline]]cyclobutane,

Claims (16)

1. An optically active bisoxazoline compound represented by the formula (1): ge RS R'\_ Va Tx Mm TN Nk R® : R® R® wherein R! and R? are the same, and each represents a Cig alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted phenyl group, or R! and R?’ are bonded each other together with the carbon atom of the oxazoline ring to which they are bonded to form a ring; R3 represents a substituted or unsubstituted naphthyl group; R* and R® are the same and each represents a hydrogen atom or a Cj.¢ alkyl group, or RY and R® are bonded each other together with the carbon atom to which they are bonded to form a cycloalkyl ring having 3 to 6 carbon atoms; and * represents an asymmetric center.
2. The compound according to claim 1, wherein R! and R? are the same, and each represents a Cig alkyl group; R® represents a l-naphthyl group or a 2-naphthyl group; R? and R®> are the same, and each represents a hydrogen atom or a Ci-3 alkyl group, or R® and R®> are bonded each other together with the carbon atom to which they are bonded to form a cycloalkyl ring having 3 to 6 carbon atoms.
3. The compound according to claim 1 or 2, wherein the configurations of two asymmetric carbon atoms : represented by * are both (S), or ({(R).
4. A process for producing the optically active bisoxazoline compound represented by the formula (1) according to claim 1, which comprises reacting a Lewis acid with an optically active diamide compound represented by the formula (2): i Ke ul % x ’ "F “Yr R® 0 0 R® wherein R! and R? are the same, and each represents a Cj alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted phenyl group, or R} and R? are bonded each other together with the carbon atom to which they are bonded to form a ring; R’ represents a substituted or unsubstituted naphthyl group; R! and R® are the same, and each represents a hydrogen atom or a C;_g alkyl group, or R! and R® are bonded each other together with the carbon atom to which they are bonded to form a cycloalkyl ring having 3 to 6 carbon atoms; and * represents an asymmetric center.
5. The process according to claim 4, wherein the optically active diamide compound represented by the Corrected sheet: 28 February 2006 formula (2) is an optically active diamide compound obtained by reaction of an optically active amino alcohol represented by the formula (3): R3 Rr rt (3) HoN OH wherein R?, RZ, R?, and * are as defined in the formula (2) and a malonic acid compound represented by the formula (4): 0 0] RY R° wherein R' and R® are as defined in the formula (2); and 2 represents an alkoxy group or a halogen atom.
6. The optically active diamide compound represented by the formula (2) according to claim 4.
7. A process for producing the optically active diamide compound represented by the formula (2): ® ps y iN x y Va OS 0 Go TE. R® o) Q rR® wherein R' and R® are the same, and each represent a C, alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted phenyl group, or R! and R? are bonded each other together with the carbon atom of the oxazoline ring to which they are bonded to form a ring; Corrected sheet: 28 February 2006
R® represents a substituted or unsubstituted naphthyl group; R* and R’ are the same and each represents a hydrogen atom or a C;-¢ alkyl group, or R‘ and R® are bonded each other together with the carbon atom to which they are bonded to form a cycloalkyl ring having 3 to 6 carbon atoms; and * represents an asymmetric center, which comprises reacting an optically active amino alcohol represented by the formula (3): Rr R! Ht 3) HoN OH wherein R?, R?, R3, and * are as defined in the formula (2) with a malonic acid compound represented by the formula (4): 0 0 R* RK wherein R? and R®> are as defined in the formula (2); and Z represents an alkoxy group or a halogen atom.
8. An asymmetric copper complex produced from a copper compound and the optically active bisoxazoline compound represented by the formula (1):
Rr RS 1 Oo 0 1 XX Ts ® R Da N-_* R* R® R® wherein R! and R? are the same, and each represents a Cis alkyl group, a substituted or unsubstituted aralkyl group, Or a substituted or unsubstituted phenyl group, or R! and R? are bonded each other together with the carbon atom of the oxazoline ring to which they are bonded to form a ring; Rr? represents a substituted or unsubstituted naphthyl group; R® and R® are the same and each represents a hydrogen atom or a C;.¢ alkyl group, or R* and R® are bonded each other together with the carbon atom to which they are bonded to form a cycloalkyl ring having 3 to 6 carbon atoms; and * represents an asymmetric center.
9. The asymmetric copper complex according to claim 8, wherein R! and R? are the same, and each represents a Cj. 6 alkyl group; R’ represents a l-naphthyl group or a 2- naphthyl group; R! and R® are the same and each represent a hydrogen atom or a C;_.3 alkyl group, or R! and R® are bonded each other together with the carbon atom to which they are bonded to form a cycloalkyl ring having 3 to 6 carbon atoms,
10. The asymmetric copper complex according to claim 8, wherein the configurations of two asymmetric carbon atoms represented by * are both (S), or (R). Corrected sheet: 28 February 2006
11. A process for producing an optically active cyclopropane compound represented by the formula (7): rE R’ ) \/ g (0 CO:R™ wherein R®, R’, R®, and R® are the same or different, and independently represent a hydrogen atom, an alkyl group optionally substituted with a halogen atom, an alkenyl group optionally substituted with a halogen atom, a substituted or unsubstituted aryl or aralkyl group: provided that, when R® and R® are the same, R® and R’ are different from each other; and R!® represents a C;.¢ alkyl group, which comprises reacting a prochiral olefin represented by the formula (5): R® R’ = (5) R® R’ wherein RS, rR’, RS, and R® are as described above, with a diazoacetic acid ester represented by the formula (6): N,CHCO,R®? (6) wherein R!? is as defined above: in the presence of the asymmetric copper complex according to claim 8, 9, or 10.
12. An optically active amino alcohol represented by the formula (30): Corrected sheet: 28 February 2006
R R35 HO R35 Af NH 2 RAG LR eo) SNP R32 R33 wherein R*, R%?, R®, and R* are the same or different, and independently represent a hydrogen atom, a C;-¢ alkyl group, or a Ci-¢ alkoxy group; R®° represents a Cig alkyl group, a substituted or unsubstituted phenyl group or a substituted or unsubstituted aralkyl group or two R*’ bonded to the same carbon atom are bonded together with the carbon atom to form a ring; and * represents an asymmetric carbon atom.
13. A process for producing an optically active naphthyl alcohol, which comprises reacting an amino alcohol represented by the formula (40): R35 HO R35 NH 34 N51 R™— —R 40 CIS “0 R32 R33 wherein R?!, R3?, R33, and R*! are the same or different and independently represent a hydrogen atom, a C;-¢ alkyl group, or a C;_¢ alkoxy group; rR? represents a C;-¢ alkyl group, a substituted or unsubstituted phenyl group or a substituted or unsubstituted aralkyl group, or two R®> bonded to the same carbon atom are bonded together with the carbon atom to form a ring, with an optically active N- formylphenylalanine in a solvent to form diastereomeric salts of the optically active naphthyl alcohols and the optically active N-formylphenylalanine represented by the formula (30): RS HO R35 3ar= a R EX (30) R33 R32 wherein R3!, R32, R33, R34, and R®® are as described above, and * represents an asymmetric carbon atom, separating one diastereomeric salt from the other diastereomeric salt, and then treating the separated diastereomeric salt with an alkali.
14. The diastereomeric salt of the optically active amino alcohol represented by the formula (30) and the optically active N-formylphenylalanine according to claim
13.
15. A process for producing an amino alcohol represented by the formula (40):
,
R35 HO R3% _ ~,—NHa ~N R34— 2 p31 40 % | JR (40) R32 R33 wherein R3!, R32, R33, and R** are the same or different, and independently represent a hydrogen atom, a C;-¢ alkyl group, or a Ci_¢ alkoxy group; R*® represents a C;-¢ alkyl group, a substituted or unsubstituted phenyl group or a substituted or unsubstituted aralkyl group or two R*® bonded to the same carbon atom are bonded together with the carbon atom to form a ring, which comprises the following steps (A) to (D) : (A) reacting a naphthylglycine compound represented by the formula (41): 0 HO _ +, —NHz J RC —+R3! (41) A Xs R33 R wherein R3!, R32, R33, and R** are the same or different and independently represent a hydrogen atom, a Ci.¢ alkyl group, or a Cj;.¢ alkoxy group, with a chlorinating agent and an alcohol represented by the formula (42): ROH (42)
wherein R® represents a Cig alkyl group, to obtain an amino acid ester hydrochloride represented by the formula (43): 0 R°0 NH, + HCI Zl WAS 34 N31 R™ = —R 43 Se I= (43) 32 R33 R wherein R**, R*?, R*®}, R?* ang R® are as described above,
(B) reacting the amino acid ester hydrochloride represented by the formula (43) obtained in the above step (A) with a compound represented by the formula (44):
(CnF2n+:CO) 20 (44) wherein n represents 1, 2 or 3, or the formula (45): CnF2n+1COX (45) wherein n is as described above; and X represents a chlorine atom, a bromine atom, or an iodine atom, in the presence of a tertiary amine to obtain a compound represented by the formula (46): 0 R°0 —NHCOC Fan, 1 pa Z pet Se A (46) R32 R33 wherein R*, R3¥, R®}, R¥, R® and n are as described above, (C) reacting the compound (46) obtained in the above step (B) with a compound represented by the formula (47):
R*Mgx’ (47) wherein R*® represents a C;.g alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted phenyl group; and X' represents a halogen atom, or a compound represented by the formula (48): X’ -Mg-R3®’ -Mg-X’ (48) wherein R3% represents a C;-¢ alkylene group and X’ is as defined above to obtain a compound represented by the formula (49): RS5 HO -R% 842° MN 31 R**— || "—R
NY." (49) RS2 R33 wherein R3!, R32, R33, R34, R* and n are as defined above, and (D) reacting the compound (49) obtained in the above step (C) with a base.
16. The compound represented by the formula (49) according to claim 15. Corrected sheet: 28 February 2006
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