title: Useful enantioselective bicyclization reactions using an N-protonated chiral oxazaborolidine as catalyst.
abstract: [reaction: see text] Nine examples are reported of enantioselective [4 + 2] cycloaddition reactions of achiral, acyclic substrates to form chiral bicyclo[4.3.0]nonane or bicyclo[4.4.0]decane derivatives.
authors.affiliation: Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA.
authors.forename: Gang
authors.initials: G
authors.lastname: Zhou
authors.forename: Qi-Ying
authors.initials: QY
authors.lastname: Hu
authors.forename: E J
authors.initials: EJ
authors.lastname: Corey