Synthesis of αβ-Unsaturated Trifluoromethyl Ketones from 4-Dimethylamino-1,1,1-trifluorobut-3-ene-2-one by Addition of Grignard Reagents
作者:Rebecca J. Andrew、John M. Mellor
DOI:10.1016/s0040-4020(00)00597-4
日期:2000.9
such as dimethylamine and they react with Grignard reagents to give αβ-unsaturated trifluoromethyl ketones in good yield by 1,4-addition followed by elimination. The generality of this procedure is contrasted with reactions based either on the use of organolithium nucleophiles, or the use of 4-alkoxy-αβ-unsaturated trifluoromethyl ketones as electrophilic partners.
通过4-乙氧基-1,1,1-三氟丁-3-烯-2-酮与胺(如二甲胺)反应可获得烯胺酮,它们与格氏试剂反应生成αβ-不饱和三氟甲基酮,产率高,产率为1,4。 -添加,然后消除。该方法的一般性与基于使用有机锂亲核试剂或基于4-烷氧基-αβ-不饱和三氟甲基酮作为亲电子试剂的反应形成对比。