applied to the synthesis of benzo-fused seven-memberedheterocycles, including tricyclic 1,4-benzodiazepines and 1,4-benzoxazepines, via a one-pot, three-component reaction. The reaction conditions are relatively mild and do not require additional metals, acid catalysts, or organic solvents. The protocol has the advantages of excellent yields in short reaction times, an easy workup procedure, and being
A new one-pot, three-component reaction of aromatic aldehydes, 2-aminophenol, and dimedone for the synthesis of tricyclic 1,4-benzoxazepine derivatives in moderate to good yields is described. (C) 2013 Elsevier Ltd. All rights reserved.
Vitamin C as a green and robust catalyst for the fast and efficient synthesis of valuable organic compounds via multi-component reactions in water
present paper, we report l-ascorbic acid (vitamin C) as an efficient and robust catalyst for the straightforward synthesis of various organic compounds, including carboxamide, benzodiazepine and benzoxazepine derivatives. These compounds with potential drug value which exhibit a broad spectrum biological and pharmacological activities were successfully accessed with vitamin C catalytic system under environmentally