Functionalized Major-Groove and Minor-Groove Chiral Polybinaphthyls: Application in the Asymmetric Reaction of Aldehydes with Diethylzinc
作者:Qiao-Sheng Hu、Wei-Sheng Huang、Dilrukshi Vitharana、Xiao-Fan Zheng、Lin Pu
DOI:10.1021/ja972623r
日期:1997.12.1
have been synthesized by using the Suzuki coupling reaction and have been spectroscopically characterized. The application of these chiral polymers in the asymmetric addition of diethylzinc to aldehydes has been studied. A minor-groove polybinaphthyl is found to be an excellent catalyst for the asymmetric reaction of diethylzinc with a number of aldehydes. The molecular weight and the molecular weight
通过使用 Suzuki 偶联反应合成了一系列功能化和光学活性的大沟聚联萘和小沟聚联萘,并进行了光谱表征。已经研究了这些手性聚合物在二乙基锌与醛的不对称加成中的应用。发现小槽聚联萘是二乙基锌与许多醛的不对称反应的极好催化剂。聚合物的分子量和分子量分布对催化过程的影响很小。手性聚合物可以很容易地回收和再利用,而不会损失催化活性和对映选择性。这些刚性和空间规则的手性聚联萘代表了新一代的对映选择性聚合催化剂。