Asymmetric Synthesis of 5-Substituted gamma-Lactones and Butenolides via Nucleophilic Additions to Oxycarbenium Ions Derived from 5(R)-(Menthyloxy)-4(R)- (phenylsulfanyl)-2(3H)-dihydrofuranone.
van Oeveren
Arjan
A
Department of Organic and Molecular Inorganic Chemistry, Groningen Center for Catalysis and Synthesis, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
Feringa
Ben L.
BL