Excellent enantioselectivities (ee >99%) and good activities (TOF >1200 h−1) are achieved under mild reaction conditions in the Rh-catalyzed hydrogenation of α,β-unsaturated carboxylic acid derivatives with the first family of phosphine–phosphite ligands containing a sugar backbone; these ligands are better than their diphosphine, diphosphite and phosphinite analogues.
在温和的反应条件下,在 Rh 催化的 α,β-不饱和
羧酸衍
生物的氢化反应中,具有优异的对映选择性 (ee >99%) 和良好的活性 (TOF >1200 h-1),第一家族的膦-
亚磷酸酯
配体含有糖骨架;这些
配体优于它们的
二膦、二
亚磷酸酯和
次膦酸酯类似物。