HYDANTOINS MODIFIED WITH CARBOXYLIC ACID ESTER GROUPS
This invention relates to a process for the preparation of a compound of general formula (I) in which R represents an alkyl groups Rl and R2 represent hydrogen or an alkyl group; R3 represents hydrogens an alkyl or cycloalkyl group which is unsubstituted or substituted with halogen, hydroxyl or alko...
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Main Authors | , |
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Format | Patent |
Language | English French |
Published |
19.02.1980
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Subjects | |
Online Access | Get full text |
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Summary: | This invention relates to a process for the preparation of a compound of general formula (I) in which R represents an alkyl groups Rl and R2 represent hydrogen or an alkyl group; R3 represents hydrogens an alkyl or cycloalkyl group which is unsubstituted or substituted with halogen, hydroxyl or alkoxy; an aryl group which is unsubstituted or substituted with nitro, halogen, alkyl, alkoxy, haloalkyl or hydroxyl; an aralkyl group or a heterocyclic group derived from furan, pyridine, thiophene, imidasole, pyrimidine or piperazine, R4 represents hydrogen; an alkyl or cycloalkyl group which are unsubstituted or substituted with halogen, hydroxyl or alkoxy; an aryl group which is unsubstituted or substituted with nitro, halogen, alkyl, alkoxy, haloalkyl and/or hydroxyl; an aralkyl group or a heterocyclic group as defined above, X represents oxygen or sulphur and n represents an integer from one to 30 by reaction with a urea with a corresponding 1,2-ethylene-dicar-boxylic acid ester which is either unsubstituted or alkyl substituted in a single stage reaction. |
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Bibliography: | Application Number: CA19760260545 |