GB888163A - A method for the preparation of ª+-aminocaprylic acid and its esters - Google Patents

A method for the preparation of ª+-aminocaprylic acid and its esters

Info

Publication number
GB888163A
GB888163A GB32307/58A GB3230758A GB888163A GB 888163 A GB888163 A GB 888163A GB 32307/58 A GB32307/58 A GB 32307/58A GB 3230758 A GB3230758 A GB 3230758A GB 888163 A GB888163 A GB 888163A
Authority
GB
United Kingdom
Prior art keywords
acid
esters
aminocaprylic
catalyst
preparation
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB32307/58A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Montedison SpA
Original Assignee
Montedison SpA
Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA
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
Application filed by Montedison SpA, Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA filed Critical Montedison SpA
Publication of GB888163A publication Critical patent/GB888163A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C253/00—Preparation of carboxylic acid nitriles
    • C07C253/30—Preparation of carboxylic acid nitriles by reactions not involving the formation of cyano groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C227/00—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton
    • C07C227/04—Formation of amino groups in compounds containing carboxyl groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C229/00—Compounds containing amino and carboxyl groups bound to the same carbon skeleton
    • C07C229/02—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton
    • C07C229/04—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated
    • C07C229/06—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having only one amino and one carboxyl group bound to the carbon skeleton
    • C07C229/08—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having only one amino and one carboxyl group bound to the carbon skeleton the nitrogen atom of the amino group being further bound to hydrogen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C255/00—Carboxylic acid nitriles
    • C07C255/01—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms
    • C07C255/19—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms containing cyano groups and carboxyl groups, other than cyano groups, bound to the same saturated acyclic carbon skeleton

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

o -aminocaprylic acid or its esters are obtained by the catalytic hydrogenation of 7-cyano-2,5-heptadienoic acid or its esters. The hydrogenation may be effected in one step using Raney nickel catalyst, or, preferably, in two steps: first using a palladium catalyst to give suberic seminitrile or an ester thereof and then hydrogenating this using a nickel/chromium catalyst to the o -aminocaprylic derivative. Ester products may be hydrolysed to the free acid with mineral acid, neutralised with ammonia, dried and extracted with absolute alcohol. The acid may also be purified through its hydrochloride. Some sebacic dinitrile may be obtained in the first stage of the two-stage process from dicyanooctadiene in the crude starting material. Specification 888,162 is referred to.
GB32307/58A 1957-10-10 1958-10-09 A method for the preparation of ª+-aminocaprylic acid and its esters Expired GB888163A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT888163X 1957-10-10

Publications (1)

Publication Number Publication Date
GB888163A true GB888163A (en) 1962-01-24

Family

ID=11331279

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32307/58A Expired GB888163A (en) 1957-10-10 1958-10-09 A method for the preparation of ª+-aminocaprylic acid and its esters

Country Status (1)

Country Link
GB (1) GB888163A (en)

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