Synthesis of 2-amino-1,4-benzodiazepin-5-ones from 2-nitrobenzoic acid and α-aminonitriles
作者:Eyad A. Younes、Ahmad Q. Husseina、Mitchell A. May、Frank R. Fronczek
DOI:10.3998/ark.5550190.0012.226
日期:——
Condensation of α-aminonitriles with 2-nitrobenzoyl chloride gives the corresponding Schiff bases, which furnish, upon reduction with Zn, the corresponding 2-amino-3,4-dihydro-5H-1,4benzodiazepin-5-ones. However, reduction of the Schiff base obtained from the condensation of 1-aminocyclohexanecarbonitrile with 2-nitrobenzaldehyde gives the methanol adduct of 2aminobenzaldehyde trimer.
α-氨基腈与 2-硝基苯甲酰氯缩合得到相应的席夫碱,用 Zn 还原后得到相应的 2-氨基-3,4-二氢-5H-1,4苯并二氮杂-5-酮。然而,将 1-氨基环己烷甲腈与 2-硝基苯甲醛缩合得到的席夫碱还原得到 2-氨基苯甲醛三聚体的甲醇加合物。