Abstract
Development of a new synthetic method for the construction of quaternary carbon centers with a trifluoromethyl group was realized by way of smooth 1,6-addition of various active methylene compounds to highly reactive δ-trifluoromethylated p-quinone methides generated in situ only with a catalytic amount of a base. A variety of aldehydes also behaved as nice nucleophiles with the aid of a NHC catalyst and the resultant products were further converted to such congested structures as the consecutive quaternary-tetrasubstituted carbons in a highly stereoselective manner. This method was also extended for the incorporation of heteroatoms like nitrogen, oxygen, and sulfur atoms.
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