Enantioselective hydrosilylation of ketimines catalyzed by Lewis basic C2-symmetric chiral tetraamide
作者:Zhouyu Wang、Siyu Wei、Chao Wang、Jian Sun
DOI:10.1016/j.tetasy.2007.03.008
日期:2007.4
L-Proline derived C-2-symmetric chiral tetraamide 5b was found to behave as an effective Lewis basic catalyst in the enantioselective hydrosilylation of ketimines, affording high isolated yields (up to 95%) and moderate to high enantioselectivities (up to 86% ee) for a broad range of ketimines. A clear synergistic effect of the two identical diamide units of 5b was observed for asymmetric induction. (c) 2007 Elsevier Ltd. All rights reserved.