A facile efficient approach to the 2‐styrylmalonates via the Lewis acid‐catalyzed isomerization of 2‐arylcyclopropane‐1,1‐dicarboxylates has been developed. The efficiency of this method was demonstrated for a representative series of such cyclopropanes. The isomerization proceeds chemo‐, regio‐ and stereoselectively to afford E ‐styrylmalonates in good yields.
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Chagarovskiy et al. (2010) studied this question.
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