A practical Ti-salen catalyst based on dimeric salen ligand for asymmetric addition of trimethylsilyl cyanide to aldehydes

A practical Ti-salen catalyst based on dimeric salen ligand for asymmetric addition of trimethylsilyl cyanide to aldehydes
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基于二聚salen配体的实用Ti-salen催化剂,用于三甲基氰硅烷与醛的不对称加成

DOI:
10.1016/j.catcom.2011.04.022
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发表时间:
2011-07
影响因子:
3.7
通讯作者:
Sun, Wei
Sun, Wei
中科院分区:
化学3区
文献类型:
--
作者:
Lv, Chengwei;Xu, Daqian;Wang, Shoufeng;Miao, Cheng-Xia;Xia, Chungu;Sun, Wei

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以L-酒石酸为配体,通过1,6-二溴己烷连接两个salen单元,合成了一个二聚salen配体。相应的钛配合物被证明是一个有效的催化剂,用于三甲基硅氰对醛的不对称加成,提供相应的光学活性的三甲基硅醚的氰醇具有中等至良好的对映体过量和优异的产率在相对较低的催化剂负载条件下。
A dimeric salen ligand derived from L-tartaric acid was synthesized through linking two salen units with 1,6-dibromohexane. The corresponding Ti complex was proved to be an efficient catalyst for asymmetric addition of trimethylsilyl cyanide to aldehydes, providing the corresponding optically active trimethylsilyl ether of cyanohydrins with moderate to good enantiomeric excesses and excellent yields under relatively low catalyst loading condition.
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