Complexes of (R)-BINAP (BINAP=2,2'-bis(diphenylphosphino)-1,1'-binaphthyl) derived from the available rhodium precursors Rh(acac)(CO)(2) and [Rh(mu-OMe)(cod)](2) are used for the asymmetric hydroformylation of vinyl acetate. Enantiomeric excesses of up to 60% are achieved with regioselectivities of up to 99%. Only a BINAP/Rh ratio of 2 is required. Effects of pressure and temperature on catalyst stability, enantio- and chemoselectivity are discussed. (C) 1999 Elsevier Science Ltd. All rights reserved.