A chiral squaramide-catalyzed asymmetric dearomative tandem annulation reaction through a kinetic resolution of MBH alcohols: highly enantioselective synthesis of three-dimensional heterocyclic compounds

Chem Commun (Camb). 2019 Aug 27;55(70):10464-10467. doi: 10.1039/c9cc05483a.

Abstract

In this communication, a chiral squaramide-catalyzed asymmetric dearomative tandem annulation reaction of unmodified Morita-Baylis-Hillman alcohols with azomethine imines has been achieved through a kinetic resolution of MBH alcohols under mild conditions, giving pharmaceutically interesting functionalized hetero-bicyclo[3.3.1]nonane derivatives in good to excellent yields with excellent enantioselectivities.