Abstract
A catalytic 1,1-dicarbofunctionalization of electron-deficient olefins was effected on the basis of the three-component coupling reactions involving olefins bearing vicinal electron-withdrawing groups, potassium cyanide, and an alkyl halide, which afforded geminally cyanoalkylated products in high yields via conjugate cyanation, 1,2-proton transfer, and enolate alkylation. The use of suitable chiral phase-transfer catalysts enabled asymmetric induction in this transformation.
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