GB592461A - Process for the manufacture of n-substituted formylhippuric esters - Google Patents

Process for the manufacture of n-substituted formylhippuric esters

Info

Publication number
GB592461A
GB592461A GB1150245A GB1150245A GB592461A GB 592461 A GB592461 A GB 592461A GB 1150245 A GB1150245 A GB 1150245A GB 1150245 A GB1150245 A GB 1150245A GB 592461 A GB592461 A GB 592461A
Authority
GB
United Kingdom
Prior art keywords
ethyl
alkyl
ester
ether
treating
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
GB1150245A
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.)
Wellcome Foundation Ltd
Original Assignee
Wellcome Foundation Ltd
Filing date
Publication date
Application filed by Wellcome Foundation Ltd filed Critical Wellcome Foundation Ltd
Publication of GB592461A publication Critical patent/GB592461A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C233/00Carboxylic acid amides
    • C07C233/01Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
    • C07C233/45Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by carboxyl groups

Landscapes

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

Abstract

N-Substituted a -formylglycine esters of the general formula <FORM:0592461/IV/1> or the tautomeric form <FORM:0592461/IV/2> wherein R and R1 represent alkyl or aralkyl radicals and R2 an alkyl or aryl radical, provided that when R1 is an alkyl radical R2 must be an aryl radical or a straight chain alkyl radical of 1-4 carbon atoms, are manufactured by treating an ester of the general formula R2CO.NR1.CH2.COOR with an alkyl formate in the presence of an alkali metal alkoxide, and acidifying the product. The reaction is conveniently effected in absolute alcohol, in a dry inert solvent such as ether or benzene, or in a mixture of alcohol and dry inert solvent. The esters used as starting materials may be made by treating an ethereal solution of the corresponding N-alkyl- or N-aralkyl-glycine ester with the appropriate acid chloride in the presence of an acid-binding substance, or by treating the hydrochloride of the N-alkyl- or N-aralkyl-glycine ester with the appropriate acid anhydride in the presence of the sodium salt of the corresponding acid. In examples: (1) sarcosine ethyl ester hydrochloride is treated in suspension in ether with benzoyl chloride in the presence of sodium carbonate, and the resulting ethyl N-methyl-hippurate is stirred with ethyl formate and a solution of potassium in alcohol and ether, yielding ethyl N-methyl-a -formylhippurate; (2) ethyl N-benzylhippurate is similarly prepared from ethyl benzylaminoacetate and is similarly converted to ethyl N - benzyl - a - formylhippuric ester; (3) sarcosine ethyl ester hydrochloride is warmed with acetic anhydride and sodium acetate, and the resulting N-acetylsarcosine ethyl ester is treated with ethyl formate as in (1) to produce a - formyl - N - acetylsarcosine ethyl ester; (4) the benzoyl chloride in (2) is replaced by caproyl chloride, yielding a -formyl-N-caproyl-N-benzylglycine ethyl ester. Sodium methoxide is also specified as a condensing agent.
GB1150245A 1945-05-05 Process for the manufacture of n-substituted formylhippuric esters Expired GB592461A (en)

Publications (1)

Publication Number Publication Date
GB592461A true GB592461A (en) 1947-09-18

Family

ID=1709445

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1150245A Expired GB592461A (en) 1945-05-05 Process for the manufacture of n-substituted formylhippuric esters

Country Status (1)

Country Link
GB (1) GB592461A (en)

Similar Documents

Publication Publication Date Title
GB592461A (en) Process for the manufacture of n-substituted formylhippuric esters
GB788140A (en) Novel 4-substituted-pyrazole derivatives and a process for the manufacture and conversion thereof
GB637400A (en) Nitroolefine derivatives of malonic esters and process for preparing same
GB630712A (en) Process of preparing intermediates useful in the preparation of penicill amine
GB847779A (en) 2-(4-biphenylyl)-í¸-hexenoic acid esters thereof
GB707709A (en) Process for the production of n-[-a:-g-dihydroxy--a:-a-dimethyl-butyryl]--a-alanine--a-mercaptoethylamide
GB722541A (en) Dipropionic acids of the heterocyclic series, and derivatives thereof
GB562314A (en) Process for the manufacture of substituted derivatives of 3-ketotetrahydrothiophene
GB945319A (en) Derivatives of partially hydrogenated tetracenes and process for preparing them
GB922443A (en) Substituted 2-thiazolidineacetic esters and a process of producing them
GB656864A (en) Preparation of amino alcohol esters of disubstituted malonic acids
GB771151A (en) Method for the preparation of aminoacyl-anilides
GB682823A (en) Manufacture of 3:3-carbalkoxy-methylene-bis-(4-hydroxy-coumarins)
GB721349A (en) Esters of n-(1-methyl-3-keto-1-butenyl)-n-(2:3-dicarboxy-3-keto-1-propenyl) amine
GB637924A (en) Manufacture of tetrahydrothiophene derivatives
GB686135A (en) Improvements in cyclopentanophenanthrene derivatives and process for producing the same
GB622504A (en) Esters of ª‡-formylphenaceturic acid
GB626027A (en) Improvements in or relating to the preparation of tertiary organic base salts of penicillin
GB733805A (en) Substituted dihydropyrans
GB787061A (en) Process for producing n-methyl--a-phenylsuccinimide
GB736151A (en) Manufacture of new compounds of the steroid series
GB624016A (en) Manufacture of tertiary and quaternary trisubstituted acetic acid aminoalkyl esters
GB682132A (en) Improvements in or relating to the preparation of beta-substituted acrylic acids
GB837447A (en) Improvements in or relating to ª†-glutamyl peptides
GB613489A (en) Improvements in process and culture medium for the production of penicillin