Asymmetric synthesis of trans-benzoperhydroindan: asymmetric induction in intramolecular Diels–Alder reactions of o-quinodimethanes

Abstract
Diastereofacial selection has been shown to occur in the asymmetric intramolecular Diels–Alder reactions of chiral o-quinodimethanes generated by thermal ring-opening of the chiral benzocyclobutenes (1a,b,e,f).