作者:Renat Kadyrov、Detlef Heller、Rüdiger Selke
DOI:10.1016/s0957-4166(97)00622-8
日期:1998.1
The synthesis of the 2,3-bisphosphite derivatives of phenyl 4,6-O-benzylidene-beta-D-glucopyranoside leads to new chelating ligands. Their rhodium(I) and platinum(II) complexes have been tested as catalysts for the asymmetric hydroformylation of vinyl acetate, allyl acetate and p-methoxystyrene. Good regioselectivity (>90% branched product), but an enantioselectivity of only less than or equal to 36% ee were found under mild reaction conditions (25-40 degrees C, 40-70 bar syngas). (C) 1998 Elsevier Science Ltd. All rights reserved.