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Schlagwörter:
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Zusammenfassung:
We report a new strategy for organocatalytic cascade reactions. Accordingly, enamine catalysis, iminium catalysis, and Brønsted acid catalysis can work in concert in a highly enantioselective organocatalytic cascade sequence toward chiral cis-3-substituted cyclohexylamines. We found that an achiral amine in combination with a catalytic amount of a chiral Brønsted acid can accomplish an aldol addition−dehydration−conjugate reduction−reductive amination to provide potential intermediates of pharmaceutically active compounds in good yields and excellent enantioselectivities.
