首先将乙酰丙酮、苯甲酰丙酮、二苯甲酰甲烷等β-二酮类化合物转变成相应的碳负离子,再用四氢呋喃作溶剂,以Br2为氧化剂,进行活性亚甲基的偶联反应,从而合成了3种相应的四羰基化合物,产率依次为91.2%,62.1%和42.6%.对影响反应的相关因素进行了讨论,并确定了最佳反应条件.
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