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以光学活性的苯乙胺和吡啶－２－甲醛缩合而得到的Ｓｃｈｉｆ碱（ＰＰＥＩ）（ＰＰＥＩ＝２－［［Ｎ－（１－ｐｈｅｎｙｌｅｔｈｙｌ）ｉｍｉｎｏ］ｍｅｔｈｙｌ］ｐｙｒｉｄｉｎｅ或２－［［Ｎ－（１－苯乙基）亚胺］甲基］吡啶）为配体，进而与［Ｉｒ（ＣＯＤ）Ｃｌ］２（ＣＯＤ＝１，５－环辛二烯）反应，合成了８个光学活性铱络合物，考察了它们在异丙醇存在下催化苯乙酮不对称氢转移反应的光学活性，发现［Ｉｒ（ＣＯＤ）（ＰＰＥＩ）Ｉ］具有较好的立体选择性．其光学产率最高可达３５．７％ｅ．ｅ．．
Schiff base (PPEI) (PPEI = 2 - [[N- (1-phenylethyl) imino] methyl] obtained by condensation of optically active phenethylamine and pyridine- -phenylethyl) imine] methyl] pyridine) as a ligand and then reacted with [Ir (COD) Cl] 2 (COD = 1,5-cyclooctadiene) to synthesize eight optically active iridium complexes The optical activity of asymmetric hydrogen transfer of acetophenone catalyzed by isopropanol was investigated. It was found that [Ir (COD) (PPEI) I] had good stereoselectivity. Its optical yield up to 35.7% e. e. .