The present invention relates to a chiral spiro phosphine-nitrogen-sulfur (P—N—S) tridentate ligand, preparation method and application thereof. The P—N—S tridentate ligand is a compound represented by Formula I or Formula II, their racemates, optical isomers, or catalytically acceptable salts thereof. The ligand has a primary structure skeleton characterized as a chiral spiro indan skeleton structure with a thio group. The chiral spiro phosphine-nitrogen-sulfur tridentate ligand can be synthesized by reacting racemic or optical active compound 7-diary/alkyl phosphine-7′-amino-1, 1′-spiro-dihydro-indene compound having a spiro-dihydro-indene skeleton as the starting material. The chiral spiro P—N—S tridentate ligand being complex with transition metal salt can be used in an asymmetric catalytic hydrogenation reaction for catalyzing carbonyl compound. In particular, in asymmetric hydrogenation reaction process, being complex with iridium for catalyzing β-alkyl-β-keto ester can obtain a high catalytic activity (a catalyst amount of 0.0002% mol) and high enantioselectivity (up to 99.9% ee) result. So the present invention has a practical value for industrial and commercial production.
本发明涉及一种手性螺膦-氮-
硫(P-N-S)三叉
配体及其制备方法和应用。P-N-S 三叉
配体是由式 I 或式 II 表示的化合物、它们的外消旋体、光学异构体或催化上可接受的盐。
配体具有初级结构骨架,其特征为带有
硫基的手性螺
茚骨架结构。手性螺膦-氮
硫三叉
配体可以外消旋或光学活性化合物 7-二/烷基膦-7′-
氨基-1,1′-螺二氢-
茚化合物(具有螺二氢-
茚骨架)为起始原料进行反应合成。与过渡
金属盐络合的手性螺 P-N-S 三叉
配体可用于不对称催化加氢反应,以催化羰基化合物。特别是在不对称氢化反应过程中,与
铱络合用于催化 β-烷基-β-
酮酯可获得高催化活性(催化剂用量为 0.0002% mol)和高对映选择性(高达 99.9% ee)的结果。因此,本发明具有工业和商业生产的实用价值。