Synthesis of new chiral diphosphine ligand (BisbenzodioxanPhos) and its application in asymmetric catalytic hydrogenation
作者:Cheng-Chao Pai、Yue-Ming Li、Zhong-Yuan Zhou、Albert S.C Chan
DOI:10.1016/s0040-4039(02)00383-0
日期:2002.4
The new chiral diphosphine ligand [(5,6), (5′,6′)-bis(1,2-ethylenedioxy)biphenyl-2,2′-diyl]bis(diphenylphosphine) (BisbenzodioxanPhos) has been successfully prepared and used in ruthenium-catalyzed asymmetric hydrogenation of 2-(6′-methoxy-2′-naphthyl)propenoic acid and β-keto esters with high enantioselectivity (92.2% and up to 99.5% ee, respectively).
已成功制备并使用了新的手性二膦配体[(5,6),(5',6')-双(1,2-乙撑二氧基)联苯-2,2'-二基]双(二苯基膦)(BisbenzodioxanPhos)在钌催化下,2-(6'-甲氧基-2'-萘基)丙酸和β-酮酯的不对称氢化具有高对映选择性(分别为92.2%和高达99.5%ee)。