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将溴乙烯或2,2—二甲基—1—溴乙烯或1—甲基—1—溴乙烯在四氢呋喃溶剂中与金属镁作用制得相应的乙烯基溴化镁。然后,与亚烷基丙二酸酯进行1,4—加成作用,合成了一系列的β,γ—不饱和仲烃基丙二酸酯和β,γ—不饱和叔烃基丙二酸酯。
The corresponding vinylmagnesiumbromide is obtained by the reaction of bromoethylene or 2,2-dimethyl-1-bromoethylene or 1-methyl-1-bromoethylene with metallic magnesium in a tetrahydrofuran solvent. Then, 1,4-addition with alkylidene malonates to synthesize a series of β, γ-unsaturated secondary alkylmalonate and β, γ-unsaturated tertiary alkylmalonate.