P∗,P∗-Bidentate diastereoisomeric bisdiamidophosphites based on N-benzyltartarimide and their applications in asymmetric catalytic processes
作者:Konstantin N. Gavrilov、Sergey V. Zheglov、Eduard B. Benetsky、Anton S. Safronov、Eugenie A. Rastorguev、Nikolay N. Groshkin、Vadim A. Davankov、Benjamin Schäffner、Armin Börner
DOI:10.1016/j.tetasy.2009.10.022
日期:2009.11
Two novel P*-stereogenic bisdiamidophosphites derived from (3R,4R)-N-benzyltartarimide as a chiral 1,2-diol have been prepared from readily available starting materials. Palladium and rhodium catalytic systems containing these new P*,P*-bidentate ligands afforded 96%, 83% and 65% ee in asymmetric allylic substitution, hydrogenation and addition processes, respectively. These diastereomeric diamidophosphites were found to be complementary stereoselectors. (C) 2009 Elsevier Ltd. All rights reserved.