IL36722A - Octahydro-1,2,4 methanopentalenyl-5-isocyanate and its production - Google Patents

Octahydro-1,2,4 methanopentalenyl-5-isocyanate and its production

Info

Publication number
IL36722A
IL36722A IL36722A IL3672267A IL36722A IL 36722 A IL36722 A IL 36722A IL 36722 A IL36722 A IL 36722A IL 3672267 A IL3672267 A IL 3672267A IL 36722 A IL36722 A IL 36722A
Authority
IL
Israel
Prior art keywords
octahydro
methanopentalenyl
isocyanate
production
benzene
Prior art date
Application number
IL36722A
Original Assignee
Ciba Geigy Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CH1837566A external-priority patent/CH472364A/en
Application filed by Ciba Geigy Ag filed Critical Ciba Geigy Ag
Publication of IL36722A publication Critical patent/IL36722A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/58Preparation of carboxylic acid halides
    • C07C51/60Preparation of carboxylic acid halides by conversion of carboxylic acids or their anhydrides or esters, lactones, salts into halides with the same carboxylic acid part
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C265/00Derivatives of isocyanic acid
    • C07C265/10Derivatives of isocyanic acid having isocyanate groups bound to carbon atoms of rings other than six-membered aromatic rings
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/54Preparation of carboxylic acid anhydrides
    • C07C51/573Separation; Purification; Stabilisation; Use of additives
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00Systems containing only non-condensed rings
    • C07C2601/12Systems containing only non-condensed rings with a six-membered ring
    • C07C2601/14The ring being saturated
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C61/00Compounds having carboxyl groups bound to carbon atoms of rings other than six-membered aromatic rings
    • C07C61/12Saturated polycyclic compounds
    • C07C61/125Saturated polycyclic compounds having a carboxyl group bound to a condensed ring system
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C61/00Compounds having carboxyl groups bound to carbon atoms of rings other than six-membered aromatic rings
    • C07C61/12Saturated polycyclic compounds
    • C07C61/125Saturated polycyclic compounds having a carboxyl group bound to a condensed ring system
    • C07C61/135Saturated polycyclic compounds having a carboxyl group bound to a condensed ring system having three rings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Description

Octahydro-1 , 2 , 4-methanopentalenyl-5-isocyanate and its production CIBA-G-EIGY AG C.34916 The present invention relates to a new polycyclic isocyanate, amely octahydro-1,2,4-methanopentalenyl-(5)-isocyanate having the formula I and to a process for the production thereof.
This new isocyanate is an intermediate compound in the production of the corresponding octahydro-1,2,4-methanopentalenyl-(5)-amine, which in turn has valuable therapeutic properties. The production and the utility of the said octahydro-1,2,4-methanopentalenyl-(5)-amine are described in Patent Specification No. 29191.
The compound of formula I can be produced, according to one aspect of the present invention, by thermal decomposition of Qctahydro-l,2,4-methanopentalenyl-(5)-azide in the presence of an inert organic solvent. Suitable inert organic solvents include aromatic hydrocarbons such as benzene, toluene and xylenes, and higher ethers such as dloxane.
The azide starting material can be produced either from the free octahydro-1,2,4-methanopentalenyl-(5)-carboxyllc acid, or from an alk l ester thereof, especially the methyl or ethyl ester* In the former case the free acid is first converted into the acid chloride and then this is reacted with, for example, an alkali metal azide such as sodium azide. In the latter case the alkyl ester may be converted directly into the azide by reaction with hydrazine hydrate and nitrous acid, preferably in the presence of a solvent ("According to a further aspect of the present invention , the subject octahydro-3.,2,4-methanopentalenyl-(5)-isocyanate .can also be prepared from the corresponding hydroxylarnide by heat ...rig. in the presence of a carboxylic acid anhydride such, as, acetic anhydride. The hydroxylarnide starting material may. be prepared .e.g. from the acid chloride by reaction with hydro-xylamirie hydrochloride in the presence, of an inert, organic: solvent and . an organic base such as pyridine. 1 Octahydro-1, 2, -methanopentaleriyl- ( 5) -carboxylic acid;, . f om which the chloride and alkyl esters referred to above lay be Obtained , can be prepared by the process described by H.K.Hall (J. Org. Chem. 25, A2 (i960) ) by the reaction of bi-cyclo[ 2.2.l]-hepta.-2,5-diene (2 , 5-norbornadiene), with aery-' lonitrile in the presence of copper-II acetate , followed by. Alkaline hydrolysis of the. octahydro-l,2,4-methanopentalenyl. - (5)-cyanide so formed.
The following examples illustrate the production of the ew isocyanate of formula I. All parts are given by weight . tir.less otherwise stated and all temperatures are given in degrees centigrade. . 93.6 Parts of sodium azide are dissolved in 1720 parts by volum4 o .50# aqueous acetone and the solution is cooled to 0°. 90 Parts.' .of octahydro-l,2,4-methanopentalenyl-(5)-carboxylic acid chloride are added within 5 to 10 minutes, while the reaction vessel is maintained "at a : temperature of from 0 to 2° by exterior cooling. Oh ■ completion of the addition, the whole is; stirred at ■ 0° · for another 50 minutes. The solution is then extracted, first with ;.000.p£rts by volume of ice cold, benzene, and secondly with. 300 parts by volume of ice cold benzene. The combined benzene . " extracts are then dried with finely pulverised -calcium chloride at a temperature of from 0 to 5°. The calcium chloride is filtered off to leave a solution of octahydro-l,.2,4-methanopentalenyl-(5)-. carboxylic ac I'd, a'zidc. ' ' This solution is then heated for 2 1/2 hours in a steam bath. Nitrogen is developed and the solution foams. The benzene is then, distilled off to leave the octahydro-1 , 2 , 4-methanopentalenyl- ( 5) - isocyinate v/hich boils at a temperature of from 70 to 75°/3 Torr.
EXAMPLE 2 .■ -■ ','■· A mixture of 1S.3 g (0.1 mol) of octahydro-1 , 2 , 4-m.eth--a.iopentalenyl-(5)-carboxylic acid chloride, 6.9 g (0.1 mol) of hydroxylarnine chloride and 8 g of pyridine, in 50. ml of benzene is stirred for SO minutes at 25°. Then 200ml of ice-water are added to the reaction ' mixture and the water is decanted from the oil that separates. The oil is taken up in ether and the ethereal solution is dried over sodium sulphate. The ether is removed by distillation. The oily residue is taken.-up in 150 ml of acetic anhydride and heated to the boiling point for 15 minutes. The reaction mixture is then poured into water and left to stand for 2 hour's. ' The oil that separates is taken'up i ether, the. ethereal solution is dried over sodium sulphate and the ether is removed by distillation. under. , reduced pressure. The residual oil is heated to 200° until the development of gas ceases, and then distilled. The octa- ■ hydro-l,2,4-methenopentalenyl-(5)-is0cyanate thus obtained distills at 70°/3Torr. '·

Claims (1)

1. insufficientOCRQuality
IL36722A 1966-12-22 1967-12-21 Octahydro-1,2,4 methanopentalenyl-5-isocyanate and its production IL36722A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1837566A CH472364A (en) 1966-12-22 1966-12-22 Process for the preparation of a new polycyclic amine

Publications (1)

Publication Number Publication Date
IL36722A true IL36722A (en) 1971-08-25

Family

ID=4432559

Family Applications (2)

Application Number Title Priority Date Filing Date
IL36722A IL36722A (en) 1966-12-22 1967-12-21 Octahydro-1,2,4 methanopentalenyl-5-isocyanate and its production
IL29191A IL29191A (en) 1966-12-22 1967-12-21 Octahydro-1,2,4-methenopentalenyl-(5)-amine and its production

Family Applications After (1)

Application Number Title Priority Date Filing Date
IL29191A IL29191A (en) 1966-12-22 1967-12-21 Octahydro-1,2,4-methenopentalenyl-(5)-amine and its production

Country Status (8)

Country Link
AT (3) AT279582B (en)
BR (1) BR6795727D0 (en)
CH (1) CH495945A (en)
ES (1) ES348511A1 (en)
GR (1) GR37787B (en)
IL (2) IL36722A (en)
NO (1) NO124251B (en)
SE (2) SE342033B (en)

Also Published As

Publication number Publication date
NO124251B (en) 1972-03-27
GR37787B (en) 1969-07-15
IL29191A (en) 1971-07-28
AT278745B (en) 1970-02-10
BR6795727D0 (en) 1973-04-26
ES348511A1 (en) 1969-03-01
CH495945A (en) 1970-09-15
SE336129B (en) 1971-06-28
SE342033B (en) 1972-01-24
AT279582B (en) 1970-03-10
AT278743B (en) 1970-02-10

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