光活性苄亚胺环钯配合物的合成

在无水乙醇溶液中实现了４－甲氧基苯甲醛与Ｌ－丙胺酸甲酯的亲核加成反应，制得了光活性的Ｎ－（２＇－丙胺酸甲酯）苄亚胺。后者与乙酸钯、卤化锂或碘化钾作用，可分别制得由卤原子桥连而成的苄亚胺环钯化合物二聚体，它们可与三苯基膦或吡啶生成相应的苄亚胺环钯配合物。其产物结构分别经比旋光度、元素分析和ＮＭＲ谱测定。

SYNTHESIS OF OPTICAL ACTIVE CYCLOPALLADATED DERIVATIVES OF ARYLIMINE

methoxybenzaldehyde reacts with L alanine methyl ester hydrochloride in ethanol to give new chiral arylinine ( ) (s) 4 CH 3O C 6H 4 CH=NCH(CH 3)COOCH 3 (1).Cyclopalladation of the imine with Pd(AcO) 2 in AcOH followed by treatment with LiCl,LiBr or KI gives the corresponding di u halogen bridged organometallics ( ) (s) Pd{4 MeO C 6H 3 CH=NCH(Me)COOMe}(u-X)] 2 (2) (a X=Cl,b X=Br,c X=I).subsequent treatment of di u halogen bridgedcompounds with PPh 3 and Pyridine in acetone yields corresponding cyclopalladated derivatives.All products have been characterized by elemental analysis,NMR and optical rotation.