Chlorination of cyclic and linear ketone oximes with aqueous H2O2/HCl in a two-phase dichloromethane-water system selectively affords gem-chloronitroso compounds in yields of up to 94%. One-pot oxidation of the resulting gem-chloronitroso compounds with peracetic acid, prepared in situ, gives gem-chloronitroalkanes and cycloalkanes in yields of up to 82%. The advantages of the method are that it is facile and environmentally benign and does not require gaseous chlorine.
在
二氯甲烷-
水两相系统中,以
水合
过氧化氢/
盐酸处理环状和线性酮
肟,可选择性地生成双
氯亚
硝基化合物,收率高达94%。接着,利用原位制备的
过乙酸对所得双
氯亚
硝基化合物进行一步氧化反应,可得到双
氯硝基
烷烃和环
烷烃,收率高达82%。该方法的优点在于操作简便、环境友好,且无需使用气态
氯。