Asymmetric Brønsted acid catalyzed carbonylactivation – organocatalytic domino electrocyclization–halogenation reaction†
Abstract
A highly efficient Brønsted acid catalyzed enantioselective Nazarov cyclization–bromination reaction has been developed. The protocol gives access to highly functionalized trans-4,5-substituted 5-bromocyclopentenone derivatives in good yields and with excellent enantioselectivities.