title: Enantioselective synthesis of cyclopropylphosphonates containing quaternary stereocenters using a D2-symmetric chiral catalyst Rh2(S-biTISP)2.
abstract: [reaction: see text] Rh(2)(S-biTISP)(2)-catalyzed reactions of dimethyl aryldiazomethylphosphonates generate donor/acceptor-substituted rhodium carbenoid intermediates capable of cyclopropanation of styrenes in high yields (85-96%), diastereoselectivity (> or =98% de), and enantioselectivity (76-92% ee).
authors.affiliation: Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, USA. hdavies@acsu.buffalo.edu
authors.forename: Huw M L
authors.initials: HM
authors.lastname: Davies
authors.forename: Gene H
authors.initials: GH
authors.lastname: Lee