Abstract
AbstractDiaminomethylenemalononitrile organocatalysts efficiently promoted the asymmetric direct vinylogous conjugate addition of α‐angelica lactone to (E)‐ and (Z)‐benzoyl acrylonitrile derivatives. The synthesized products bear vicinal tertiary and quaternary stereogenic centers with excellent enantioselectivities (up to 98% ee). This report is the first successful example of the stereoselective conjugate addition using (Z)‐benzoyl acrylonitriles as Michael acceptor.
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