在我们的第Ⅰ报和第Ⅱ报中,曾研究了乙烯基类溴化镁与亚烷基丙二酸酯及亚烃基乙酰乙酸乙酯的1,4-加成.因此,可以预期乙炔基类溴化镁对于亚烷基丙二酸酯或亚烃基乙酰乙酸乙酸将具有类似的加成行为.Jones曾报道用四氢呋喃作溶剂制得的乙炔基溴化镁与简单羰基化合物进行了加成反应.吴钧和等研究了乙炔基溴化镁与α,β-不饱和酮的加成作用,而得到1,2-加成产物. In our first and second reports, the 1,4-addition of vinyl magnesium bromide to alkylidene malonates and ethyl acetoacetate has been studied Thus it is expected that ethynyl Magnesium bromide-like compounds will have similar additive behavior for alkylene malonates or acetoacetoxyacetic acid Acetone has been reported by Jones to have ethynylmagnesium bromide prepared by the addition of tetrahydrofuran to simple carbonyl compounds Wu Jun et al. Studied the addition of ethynyl magnesium bromide to α, β-unsaturated ketones to obtain 1,2-addition products.