Novel Synthesis of a 2H-1,2-Benzothiazine -1,1-Dioxide Derivative
摘要:
We report a novel synthesis of 4-chloro-2-cyclohexyl-6,7-dimethoxy-2H-1,2-benzothiazine-l,l-dioxide 6 from 3,4-dimethoxychalcone 1. Chlorosulfonation of 1 followed by amination, then epoxidation under basic conditions with immediate elimination of the benzoyl group and electrophilic chlorination resulted in 6. A mechanism is suggested.
Cremlyn, Richard J.; Swinbourne, Frederick J.; Bassin, Paul, Phosphorus, Sulfur and Silicon and the Related Elements, 1991, vol. 63, # 3/4, p. 385 - 396
作者:Cremlyn, Richard J.、Swinbourne, Frederick J.、Bassin, Paul、Dane, David、Higgins, Karen、et al.