A Tandem Reduction-Oxidation Protocol for the Conversion of 1-Keto-1,2,3,4-tetrahydrocarbazoles to Carbazoles via Tosylhydrazones through Microwave Assistance: Efficient Synthesis of Glycozoline, Clausenalene, Glycozolicine, and Deoxycarbazomycin B and th
作者:Suchandra Chakraborty、Gautam Chattopadhyay、Chandan Saha
DOI:10.1002/jhet.999
日期:2013.1
methodology for the synthesis of carbazoles from 1‐keto‐1,2,3,4‐tetrahydrocarbazoles via the corresponding tosylsulfonhydrazones by a one‐pot tandem reduction–oxidation protocol using a combination of NaBH4 and Pd–C on MgSO4·7H2O, a solidsupport, under microwave is developed. The reaction is successfully extended toward the synthesis of several naturally occurring carbazole alkaloids, namely 3‐methylcarbazole