Highly enantioselective three-component Povarov reaction catalyzed by SPINOL-phosphoric acids
2013
Chiral SPINOL-phosphoric acids exhibited high activities and excellent diastereo- and enantioselectivities in the catalysis of the three-component Povarov reaction of benzyl N-vinylcarbamate, anilines and aldehydes with a catalyst loading of 5 mol%. The synthetic utility of this protocol was demonstrated by the asymmetric synthesis of enantioenriched benzo[e]indolizidine with excellent yield and excellent level of sterecontrol.
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