derivative (RMgX) with lithium di-t-butylcuprate t-Bu2CuLi or (trimethylsilylacetylenyl)copper mixed trialkylmagnesium cuprates are formed, which in turn lead exclusively to selective and regiospecific 1,4-addition of the R group in reactions with α,β-enones and α,β-enals. Yields are reasonable. For the generation of mixed trialkylmagnesium cuprates Me3SiCCCu complements the activity of CH3Cu:, the latter is
在ε-炔属
有机镁衍
生物(RMgX)与二叔丁基
铜锂t-Bu 2 CuLi或(三甲基甲
硅烷基
乙炔基)
铜的混合反应中,形成了三烷基
镁铜酸盐,这又导致选择性地和区域特异性的1,4-加成反应。 R基团与α,β-烯酮和α,β-烯醛反应。产量是合理的。为了生成混合的三烷基
镁铜酸盐,Me 3 SiC activityCCu补充了CH 3 Cu:的活性,后者可用于高反应性基团,而前者可用于低反应性基团。