Yao Cheng, Thanh Le, Tsz Tin Yu, Mohan Bhadbhade, David StC. Black, Naresh Kumar
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Synthesis of 1,4-Benzodiazepin-2-ones from Isatins
Various N-protected amino acids were coupled to isatin forming N-amino acylisatins. These novel N-acylisatins participate in a ring–opening reaction with either alcohols or amines to give the corresponding N-glyoxylesters or amides. Upon deprotection, cyclization under basic conditions produces 1,4-benzodiazepin-2-ones bearing ester or amide functionalities at the C5 position. This method provides an effective approach for the construction of benzodiazepine derivatives with diverse substituents at C3 and C5.
期刊介绍:
Journal of Organic Chemistry welcomes original contributions of fundamental research in all branches of the theory and practice of organic chemistry. In selecting manuscripts for publication, the editors place emphasis on the quality and novelty of the work, as well as the breadth of interest to the organic chemistry community.