rhodium(I) catalyzed isomerization of 1,3-diene monoepoxides and α-alkylidene-γ-butyrolactones, respectively. The former transformation is formally regarded as the equivalent of a regiospecific aldol condensation of an unsymmetrical ketone.
α,β-不饱和羰基化合物和
丁烯化物可以通过
铑(I)分别催化1,3-二
烯单
环氧化物和α-亚烷基-
γ-丁内酯的异构化反应制备。前一种转化形式被正式认为是不对称
酮的区域特异性醛醇缩合的等价物。