噻唑烷类手性配体在催化不对称硅氢化反应中的应用 Ⅲ.高分子酮的催化不对称硅氢化反应

APPLICATION OF CHIRAL THIAZOLIDINE LIGAND IN CATALYTICASYMMETIC HYDROSILYLATIONⅢ. Asymmetric Hydrosilylation of Polyketones

噻唑烷类手性配体在催化不对称硅氢化反应中的应用Ⅲ．高分子酮的催化不对称硅氢化反应姚金水周立国（山东轻工业学院化学工程系，济南２５０１００）李弘何炳林（南开大学高分子化学研究所吸附与分离功能高分子材料国家重点实验室，天津３０００７１）关键词不对称硅氢化...

The asymmetric hydrosilylation of poly (isopropenyl methyl ketone) gave an optically active polymer of poly (3methyl3butene2ol). The reaction was carried out with diphenyl silane and a rhodium(Ⅰ) catalyst containing a chiral thiazolidine ligand of 2(2pyridyl)4carbomethoxy1,3thiazolidine (A). The effect of reaction conditions on the optical rotation of the polymer products was studied in detail. The highest specific rotation (20D) was +198° when the hydrosilylation was carried out in 1,4dioxane at room temperature. On the other hand, the copolymer for n(isopropenyl methyl ketone)/n(styrene)=1 is the corresponding alcohol having negative smaller specific rotation, -54°.