Efficient catalytic asymmetric synthesis of α-substituted phenyloxyacetyloxy and aroyloxy phosphonates
作者:Hui Liu、Yong-Gui Zhou、Zheng-Kun Yu、Wen-Jing Xiao、Sheng-Hua Liu、Hong-Wu He
DOI:10.1016/j.tet.2006.09.011
日期:2006.11
Optically active α-substituted phenyloxyacetyloxy and aroyloxy phosphonates have been synthesized via catalyticasymmetric hydrogenation of the corresponding prochiral α,β-unsaturated phosphonatesusing Rh(I)/(R,R)-Me-DuPhos as the catalyst in methanol at 18 °C. The asymmetric hydrogenation reaction exhibits excellent enantioselectivity with enantiomeric excesses from 91 to 96%.