GB816596A - Improvements in or relating to the production of ammonium pyrrolidone carboxylate - Google Patents

Improvements in or relating to the production of ammonium pyrrolidone carboxylate

Info

Publication number
GB816596A
GB816596A GB39268/57A GB3926857A GB816596A GB 816596 A GB816596 A GB 816596A GB 39268/57 A GB39268/57 A GB 39268/57A GB 3926857 A GB3926857 A GB 3926857A GB 816596 A GB816596 A GB 816596A
Authority
GB
United Kingdom
Prior art keywords
acid
halogenoglutaric
prepared
ammonium
chloroglutarate
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
GB39268/57A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB816596A publication Critical patent/GB816596A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D207/18—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
    • C07D207/22—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D207/24—Oxygen or sulfur atoms
    • C07D207/26—2-Pyrrolidones
    • C07D207/273—2-Pyrrolidones with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to other ring carbon atoms
    • C07D207/277—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C07D207/28—2-Pyrrolidone-5- carboxylic acids; Functional derivatives thereof, e.g. esters, nitriles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyrrole Compounds (AREA)

Abstract

DL-pyrrolidone carboxylic acid ammonium salt is prepared by reacting an a -halogenoglutaric acid, a -halogenoglutaric anhydride, or a mono- or di-alkyl ester of an a -halogenoglutaric acid, with aqueous ammonia, the molar ratio of ammonia to glutaric acid derivative being at least 2 : 1, preferably at least 5 : 1, under pressure sufficient to maintain an aqueous liquid phase and at a temperature of 150-275 DEG C., preferably 200-250 DEG C. The alkyl esters may contain alkyl groups of 1-4 carbon atoms. An inert gas such as nitrogen may be used to maintain the pressure. "Halogeno" means chloro, bromo, or iodo, chloro being preferred. The resulting ammonium DL-pyrrolidone carboxylate may be hydrolysed to DL-glutamic acid, either without purification or after crystallization and purification. a -Chloroglutaric anhydride and monomethyl a -chloroglutarate are prepared by chlorination of the simple compounds. Dimethyl a -chloroglutarate is prepared by esterification of a -glutaric acid.
GB39268/57A 1956-12-28 1957-12-17 Improvements in or relating to the production of ammonium pyrrolidone carboxylate Expired GB816596A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US816596XA 1956-12-28 1956-12-28

Publications (1)

Publication Number Publication Date
GB816596A true GB816596A (en) 1959-07-15

Family

ID=22165561

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39268/57A Expired GB816596A (en) 1956-12-28 1957-12-17 Improvements in or relating to the production of ammonium pyrrolidone carboxylate

Country Status (1)

Country Link
GB (1) GB816596A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996009277A1 (en) * 1994-09-24 1996-03-28 Basf Aktiengesellschaft Process for preparing d,l-aspartic acid from ammonium salts of the maleic acid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996009277A1 (en) * 1994-09-24 1996-03-28 Basf Aktiengesellschaft Process for preparing d,l-aspartic acid from ammonium salts of the maleic acid

Similar Documents

Publication Publication Date Title
GB1276446A (en) Process for the preparation of bis-maleimides
GB995056A (en) A process for the preparation of esters of carboxylic acids and novel esters of said carboxylic acids
AU8551091A (en) Process for the production of carboxylic acid anhydrides
GB1042631A (en) New fused polycyclic hydrocarbon derivatives and processes for the preparation thereof
KR970042536A (en) Method of producing ascorbic acid
GB816596A (en) Improvements in or relating to the production of ammonium pyrrolidone carboxylate
GB981252A (en) Process for the preparation of acylation products of phosphorous acid
GB1111311A (en) Dihydroxy azonia anthracene and dihydroxy diazonia pentaphene salts and diesters thereof
GB1448547A (en) Derivative of phenylacetic acid
GB1031268A (en) Nicotinic acid derivatives and process for the preparation thereof
GB1069337A (en) Basically substituted bis-naphthalimides and their production
GB1107572A (en) Process for the manufacture of n-acyl taurides
GB1381442A (en) Process for the preparation of prostaglandin precursors
GB820503A (en) Improvements in or relating to the production of n-substituted 2-hydroxymethyl pyrrolidines
GB863235A (en) Improvements in or relating to organic compounds related to heparin
ES365960A1 (en) Process for the production of {65 -chloroacetoacetic acid esters
GB747417A (en) Improvements in or relating to the production of phthalic acids
GB846737A (en) 3-substituted 4-hydroxybenzoic acids and their preparation
GB1041015A (en) Improvements in or relating to spiropiperidyl-succinimide derivatives
GB1044977A (en) Improvements in or relating to the production of acid anhydrides
JPS5538347A (en) Preparation of indazoleacetic acids
ES269744A1 (en) A process for the preparation of 4-acyloxy-and 4-hydroxy-3-keto-í -steroids
GB1201966A (en) PROCESS FOR THE MANUFACTURE OF beta-AMINOCARBOXYLIC ACID DERIVATIVES AND/OR OF THE CORRESPONDING &alpha,beta-UNSATURATED CARBOXYLIC ACID DERIVATIVES
GB995483A (en) Process for the preparation of chloroquinoxaline carboxylic acid derivatives
GB834357A (en) Method for preparing carboxylic acid anhydrides, acyl halides and mixtures thereof