Mechanistic studies in the chemistry of urea. Part 2. Reaction with benzil, 4,4′-dimethylbenzil, and 4,4′-dimethoxybenzil
Autor: | Elizabeth Leitch, Anthony R. Butler |
---|---|
Rok vydání: | 1977 |
Předmět: | |
Zdroj: | J. Chem. Soc., Perkin Trans. 2. :1972-1976 |
ISSN: | 1364-5471 0300-9580 |
DOI: | 10.1039/p29770001972 |
Popis: | Urea and N-methylurea react with benzil and substituted benzils in alkaline conditions to form 5,5-diphenylhydantoins, or the appropriately substituted compounds. The mechanism of reaction is rate-determining attack by the urea anion on benzil, rapid cyclisation, and slow rearrangement. The mechanism was deduced from a kinetic study, With NN′-dimethylurea the product is a diol. |
Databáze: | OpenAIRE |
Externí odkaz: |