Effect of diazoalkane structure on the stereoselectivity of rhodium(II) (S)-N-(arylsulfonyl)prolinate catalyzed cyclopropanations

Article abstract of DOI:10.1016/0040-4039(96)00823-4

Rhodium(II) (S)-N-(arylsulfonyl)prolinate catalyzed decomposition of diazoalkanes containing a methyl ester and either a vinyl or a phenyl group in the presence of alkenes results in highly diastereoselective and enantioselective cyclopropanations.