申请人:Takasago International Corporation
公开号:US07473793B2
公开(公告)日:2009-01-06
A novel transition metal complex, preferably a ruthenium-phosphine complex or rhodium-phosphine complex, which is effectively usable in various asymmetric syntheses and, in particular, is more effectively usable in the asymmetric hydrogenation of various ketones; and a novel process for producing an optically active alcohol with the complex. The novel transition metal complex includes a ligand obtained by introducing a diarylphosphino group into each of the 2- and 2′-positions of diphenyl ether, benzophenone, benzhydrol, or the like. It preferably further includes an optically active 1,2-diphenylethylenediamine coordinated thereto. The complex preferably is a novel diphosphine-ruthenium-optically active diamine complex or diphosphine-rhodium-optically active diamine complex. The process comprises using the complex as an asymmetric hydrogenation catalyst to conduct the asymmetric hydrogenation of a ketone compound to thereby obtain an optically active alcohol in a high optical purity and a high yield.
一种新型的过渡金属配合物,最好是钌-膦配合物或铑-膦配合物,可有效地用于各种不对称合成反应,特别是在各种酮的不对称氢化反应中更有效地使用;以及使用该配合物生产手性醇的新型方法。该新型过渡金属配合物包括通过将二苯醚、苯甲酮、苯甲醇等中的2-和2'-位置引入二芳基膦基团而获得的配体。它最好还包括一个手性的1,2-二苯基乙二胺配位。该配合物最好是新型双膦-钌-手性二胺配合物或双膦-铑-手性二胺配合物。该方法包括使用该配合物作为不对称氢化催化剂,进行酮化合物的不对称氢化反应,从而获得高光学纯度和高收率的手性醇。