Efficient Asymmetric Hydrogenation of α-Acetamidocinnamates through a Simple, Readily Available Monodentate Chiral<i>H</i>-Phosphinate
作者:Xiang-Bo Wang、Midori Goto、Li-Biao Han
DOI:10.1002/chem.201304675
日期:2014.3.24
An air‐stable, simple (RP)‐mentylbenzylphosphinate, readily available in large quantities, can efficiently induce the rhodium‐catalyzed asymmetric hydrogenation of α‐acetamidocinnamates with high enantioselectivity (up to 99.6 % ee). Intramolecular hydrogen bonding plays an important role in this asymmetric induction.
空气稳定,简单的(R P)-薄荷基苄基次膦酸酯可以轻松获得,可以高效诱导铑催化的对乙酰氨基二甲酸酯的不对称氢化,对映选择性高(ee高达99.6%)。分子内氢键在这种不对称诱导中起重要作用。