Tropylium Salt-Promoted Vinylogous Aza-Michael Addition of Carbamates to para- Quinone Methides: Elaboration to Diastereomerically Pure α,α'-Diarylmethyl Carbamates
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Carbocation catalysis is emerging as an important subarea of Lewis acid catalysis. Some stable and isolable carbocations have been successfully utilized as Lewis acid catalysts and promoters in many synthetic transformations. In this manuscript, we report a tr... ...
