An efficient asymmetric [4+2] cyclization of α,β-unsaturated 2-acyl imidazoles with ortho‐hydroxyphenyl‐substituted para‐quinone methide derivatives catalyzed by a chiral-at-metal rhodium complex has been developed. The enantioenriched chroman derivatives bearing three contiguous...
An efficient asymmetric cyclopropanation of sulfoxonium ylides with α,β-unsaturated 2-acyl imidazoles catalyzed by a chiral-at-metal rhodium complex has been developed. The enantioenriched cyclopropane derivatives bearing three contiguous tertiary stereocenters were...
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