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 catalytic asymmetric hydrogenation of the corresponding prochiral α,β-unsaturated phosphonates using 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%.
在18°C的甲醇中,用Rh(I)/(R,R)-Me-DuPhos作为催化剂,通过相应的前手性α,β-不饱和膦酸酯的催化不对称氢化反应,合成了旋光性α-取代的苯氧基乙酰氧基和芳酰氧基膦酸酯。。不对称氢化反应表现出优异的对映选择性,对映体过量为91%至96%。