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中文摘要：
合成了一种新型可重复使用的含手性联萘酚的C3对称树状小分子配体（L1）,并将L1用于诱导二乙基锌和芳基醛的不对称加成反应.获得的二级醇最高的对映选择性为91%ee,产物最高收率达99%.反应完成后,只需经过简单的萃取和洗涤过程就可实现对配体L1高回收率的回收.配体L1重复使用5次其催化活性和对映选择性没有明显变化.
英文摘要：
A novel,recoverable C3-symmetric dendritic small molecular ligand（ L1） containing BINOL has been synthesized to conduct the enantioselective addition of diethylzinc to aromatic aldehydes. The optically active s econdaryalcohols were obtained with up to 91% ee and up to 99% yield. After the reaction was finished,the dendritic ligand L1 was recovered with a high yield by simple extraction and washing process. The recycled dendritic ligand was reused for five times without loss of catalytic activity as well as enantioselectivity.
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