N-Methyl-alpha,alpha-diphenyl-L-prolinol derivatives with para-bromo substituents in one or both of the phenyl rings are easily bound to crosslinked polystyrene beads containing phenylboronic acid residues using Suzuki reactions. When the products were used as catalysts for the reactions of aldehydes with diethylzinc in toluene at 20 degrees C, the alcohols were produced in chemical yields >90% and
使用Suzuki反应,在一个或两个苯环中具有对
溴取代基的N-甲基-α,α
-二苯基-L-脯氨醇衍
生物很容易与含有苯基
硼酸残基的交联聚
苯乙烯珠结合。当产物用作醛与
二乙基锌在
甲苯中于20℃反应的催化剂时,醇的
化学收率> 90%,ee最高可达94%。两种负载型催化剂中较好的一种,其ee仅比用相应的可溶性催化剂得到的ee低0-9%。一种负载型催化剂成功回收了九次。