134050-70-7

Basic information

• Product Name: diphenylmethyl 3H-azepin-2-one-5-carboxylate
• CAS NO: 134050-70-7
• Molecular Weight: 319.36
• Mol File: 134050-70-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: diphenylmethyl 3H-azepin-2-one-5-carboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: diphenylmethyl 3H-azepin-2-one-5-carboxylate(134050-70-7)
• EPA Substance Registry System: diphenylmethyl 3H-azepin-2-one-5-carboxylate(134050-70-7)

Safety Data

• Hazardous Substances Data: 134050-70-7(Hazardous Substances Data)

Upstream product

• 908093-98-1 diazodiphenylmethane 
• 134050-71-8 3H-azepin-2-one-5-carboxylic acid 

Relevant articles and documents

3H-azepines and related systems. Part 4. Preparation of 3 H-azepin-2-ones and 6H-azepino[2,1-b]quinazolin-12-ones by photo-induced ring expansions of aryl azides

Photolysis of a series of p-substituted phenyl azides (p-X-C6H4N3; X= CO2Me, CO2Et, CN, CF3, SO2NH2, CO2CHPh2, COMe, CHO, and NO2) in 1:1 (v/v) THF-water solution produces, in the majority of cases, a 5-substituted-3H-azepine-2-one. In a like manner, 3H-azepin-2-one-3-carboxylates can be prepared from 5-substituted-2-azidobenzoates, providing the 5-substituent is electron-withdrawing. 3H-Azepin-2-one mono- and di-carboxylic acids, the former in admixture with decarboxylated material, and 6H-azepino[2,1-b]quinazolin-12-ones, are obtained by irradiation of 2-azidobenzoic acid and of 5-azidoisophthalic acid, respectively. The mode of formation of the azepino-quinazolinones is discussed.