Optically active compounds of the formula I ##STR1## in which R.sup.1 is C.sub.1 -C.sub.4 -alkyl, phenyl or benzyl, R.sup.2 is a radical of the formula II or IIa ##STR2## in which R.sup.3 is H or --CH.sub.3, or R.sup.1 and R.sup.2 together form a radical of the formula ##STR3## in which R.sup.2 has the meaning given above; and * represents predominantly R or predominantly S configuration. The compounds can be polymerized to give homopolymers or copolymers. The compounds and the polymers can be complexed with iridium(I) salts in the presence of a diene. The complexes are suitable as enantioselective catalysts.
式I的光学活性化合物 ##STR1## 其中R.sup.1是C.sub.1-C.sub.4-烷基,苯基或苄基,R.sup.2是式II或IIa的基团 ##STR2## 其中R.sup.3是H或--CH.sub.3,或R.sup.1和R.sup.2共同形成式 ##STR3## 其中R.sup.2具有上述给定的含义;而*代表主要是R或主要是S的构型。这些化合物可以聚合形成均聚物或共聚物。这些化合物和聚合物可以在二烯存在下与
铱(I)盐形成络合物。这些络合物适用于手性选择性催化剂。