GB764146A - Production of new hydantoin derivatives - Google Patents

Production of new hydantoin derivatives

Info

Publication number
GB764146A
GB764146A GB3497/55A GB349755A GB764146A GB 764146 A GB764146 A GB 764146A GB 3497/55 A GB3497/55 A GB 3497/55A GB 349755 A GB349755 A GB 349755A GB 764146 A GB764146 A GB 764146A
Authority
GB
United Kingdom
Prior art keywords
methyl
carboxylic acid
ethyl
butyl
ester
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
GB3497/55A
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.)
Novartis AG
Original Assignee
JR 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
Application filed by JR Geigy AG filed Critical JR Geigy AG
Publication of GB764146A publication Critical patent/GB764146A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D233/00Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
    • C07D233/54Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
    • C07D233/66Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members 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
    • C07D233/72Two oxygen atoms, e.g. hydantoin

Landscapes

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

Abstract

The invention comprises hydantoins of the general formula <FORM:0764146/IV(b)/1> where R1 and R2 are the same or different hydrocarbon radicals, any aliphatic chains of which can be interrupted by O or S and/or any aromatic nuclei of which can be halogen or alkoxy substituted, and which can be linked to each other, and their preparation by heating the dihydrazide or an ester of a monohydrazide of a C,C-disubstituted glycine-N-carboxylic acid in the presence or absence of solvents or diluents. A specific diluent is water, this being gradually distilled off to remove continuously the liberated hydrazine. Examples describe the preparation, by heating a di-lower alkyl ester of the appropriate C,C-disubstituted glycine-N-carboxylic acid with excess hydrazine hydrate in absolute ethanol or methanol, distilling off the solvent and concentrating an aqueous solution of the dihydrazide residue by heating, of the following compounds of the above general formula in which R1 and R2 in the same compound have the values: dimethyl, methyl - iso - butyl, diethyl, ethyl - n - butyl, methyl-n-hexyl, pentamethylene, and methylbenzyl. The following 5,5-disubstituted-3-amino hydantions are also referred to: methylethyl, methyl-n-propyl, ethyl-n-amyl, methylcyclopropyl, methyl - phenyl, ethyl - phenyl, diphenyl, methyl - allyl, ethyl - cyclohexenyl, methyl - p - chlorophenyl, methyl - p - methoxyphenyl, methyl - b - phenoxyethyl, methylb -methylmercaptoethyl and methyl-sec-butyl. Starting material. N-carbethoxy-1-aminocyclohexane carboxylic acid ethyl ester is obtained by reacting 1-amino-cyclohexane carboxylic acid ethyl ester with chloroformic acid ethyl ester.
GB3497/55A 1954-02-16 1955-02-07 Production of new hydantoin derivatives Expired GB764146A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL764146X 1954-02-16

Publications (1)

Publication Number Publication Date
GB764146A true GB764146A (en) 1956-12-19

Family

ID=11056238

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3497/55A Expired GB764146A (en) 1954-02-16 1955-02-07 Production of new hydantoin derivatives

Country Status (1)

Country Link
GB (1) GB764146A (en)

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