Viologen-mediated Reductive Transformations of gem-Bromonitro Compounds and ￥á-Nitro Ketones by Sodium Dithionite

摘要

Reductive transformations of gem-bromonitro compounds and メ-nitro ketones were carried out conveniently with sodium dithionite by using dioctyl viologen as an electron-transfer catalyst in dichloromethane-water two-phase system:the bromine atom in gem-bromonitro compounds and the nitro group in メ-nitro ketones are replaced by hydrogen.