Copper(I)-Catalyzed Wittig Olefination Reactions of<i>N</i>-Tosylhydrazones with Trifluoromethylketones
作者:Qiang Sha、Yunyang Wei
DOI:10.1002/cctc.201300583
日期:2014.1
iodide‐catalyzed Wittig olefination reactions of N‐tosylhydrazones with trifluoromethylketones are reported. This procedure provides an efficient method for the synthesis of various trifluoromethyl‐substituted alkenes in moderate to good yields (up to 89 % yield) and good stereoselectivity (up to 93 % E‐selectivity). To the best of our knowledge, it is the first report of a Wittig reaction of N‐tosylhydrazones
报道了N-甲苯磺酰hydr与三氟甲基酮的碘化亚铜催化的Wittig烯化反应。该方法为中等至良好的收率(高达89%的收率)和良好的立体选择性(高达93%的E选择性)合成各种三氟甲基取代的烯烃提供了一种有效的方法。据我们所知,这是N-甲苯磺酰azo与酮发生维蒂希反应的首次报道。