N–B dative bond-induced [3.3.0] bicyclic boronate-tethered exo-selective intramolecular Diels–Alder reaction†
Abstract
We report herein a highly exo-selective intramolecular Diels–Alder reaction of alkenyl boronates which employs an N–B dative bond-involved bicyclic rigid tether. Complex C(sp3)-rich polycyclic molecules containing up to 8 stereocenters can be readily formed via an operationally simple two-step procedure.