bromide has been successfully used as an additive instead of hexamethylphosphoric triamide in the O-trimethylsilylation of enolates generated by copper halide-catalyzed reaction of Grignard reagents with a number of α, β-unsaturated carbonyl compounds. Some conjugate additions also proceed satisfactorily in the absence of lithium bromide.
摘要 在卤化
铜催化
格氏试剂与许多α, β-不饱和羰基化合物反应生成烯醇化物的O-三甲基甲
硅烷基化反应中,无
水溴化锂已成功用作添加剂代替六甲基
磷酰胺。在没有
溴化锂的情况下,一些共轭加成也能令人满意地进行。