A [3+2]/[2+1] domino annulation reaction of cyclohexadienones and α‐aryl vinylsulfonium salts has been reported. A range of cyclopropane fused tricyclic enones bearing four contiguous stereocenters were obtained as a single diastereomer in 44‐93% yields. The synthetic utility was demonstrated with the gram‐scale reactions and further transformations of the products.

中文翻译：

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通过 [3+2]/[2+1] 多米诺环化实现环己二烯酮的去对称化：获得环丙烷稠合三环烯酮

环己二酮和α-芳基乙烯基锍盐的[3+2]/[2+1]多米诺成环反应已被报道。一系列带有四个连续立构中心的环丙烷稠合三环烯酮以单一非对映异构体的形式获得，产率为 44-93%。通过克级反应和产物的进一步转化证明了合成效用。