Heterocyclic Studies. 49. Preparation and Reactions of Dihydro-3,5,7-trimethyl-6-phenyl-1,2-diazepin-4-ones

Article abstract of DOI:10.1021/jo00212a028

The reaction of diazoethane with α-methylcinnamoyl chloride or mixed anhydrides leads to a 3-(diazopropionyl)pyrazoline 5, which is converted to the 1,5- or 2,3-dihydrodiazepinone (11 and 12).The chemistry of these diazepinones and the 3,5,7-trimethyl-1,2