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.
本发明涉及手性螺环膦-氮-
硫(P—N—S)三齿
配体,其制备方法及应用。P—N—S三齿
配体是由
化学式I或
化学式II代表的化合物,它们的外消旋体、光学异构体或催化可接受的盐。该
配体具有主要结构骨架,其特征是具有一个含
硫基团的手性螺环
茚骨架结构。手性螺环膦-氮-
硫三齿
配体可以通过将外消旋或光学活性化合物7-二芳基/烷基膦-7'-
氨基-1,1'-螺二氢
茚化合物作为起始物质来合成,该化合物具有一个螺二氢
茚骨架。与过渡
金属盐形成络合物的手性螺P—N—S三齿
配体可用于不对称催化氢化反应,用于催化羰基化合物。特别地,在不对称氢化反应过程中,与
铱形成络合物用于催化β-烷基-β-
酮酸酯可以获得高催化活性(0.0002%摩尔的催化剂量)和高对映选择性(高达99.9% ee)的结果。因此,本发明对工业和商业生产具有实际价值。