Jian-Hua Xie, Lixin Wang, Yu Fu
Mar 21, 2003
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206
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Journal
Journal of the American Chemical Society
Abstract
Synthesis of chiral diphosphine ligands containing a spiro scaffold was described. The ruthenium complexes of these spiro ligands were found to have extremely high activities (S/C up to 100 000) and enantioselectivities (ee up to 99.5%) in the asymmetric hydrogenation of aromatic, heteroaromatic, and alpha,beta-unsaturated ketones.