Improved synthesis of trifluoromethyl sulfones used as intermediates for the preparation of di- or tri-substituted olefins
作者:Fabrice Eugene、Bernard Langlois、Eliane Laurent
DOI:10.1016/0022-1139(93)02909-x
日期:1994.3
Primary and secondary trifluoromethyl sulfones (triflones) are efficiently obtained from easily available sodium trifluoromethanesulfinate (triflinate) and alkyl bromides in N,N-dimethylacetamide. This technique is more powerful than the potassium triflinate/acetonitrile system. Ethyl aconitate can be also produced in one step from ethyl bromoacetate and diisopropylethylamine, sodium triflinate being
伯和仲三氟甲基砜(三氟甲磺酸酯)是从容易获得的三氟甲亚磺酸钠(三氟甲磺酸酯)和烷基溴化物在N,N-二甲基乙酰胺中高效获得的。该技术比三氟甲磺酸钾/乙腈系统更强大。乌头酸乙酯也可以由溴乙酸乙酯和二异丙基乙胺一步生产,三氟甲酸钠是催化剂。