Chlorination of Oximes with Aqueous H<sub>2</sub>O<sub>2</sub>/HCl System: Facile Synthesis of <i>gem</i>-Chloronitroso- and <i>gem</i>-Chloronitroalkanes, <i>gem</i>-Chloronitroso- and <i>gem</i>-Chloronitrocycloalkanes
作者:Alexander Terent’ev、Igor Krylov、Yuri Ogibin、Gennady Nikishin
DOI:10.1055/s-2006-950304
日期:2006.11
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。