| Application of chiral thiazolidine ligands to asymmetric hydrosilation |
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| 作者姓名： | 李弘 姚金水 何炳林 |
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| 作者单位： | State Key Laboratory of Functional Polymeric Materials for Adsorption and Separation，Institute of Polymer Chemistry，Nankai University，Tianjin 300071，China，State Key Laboratory of Functional Polymeric Materials for Adsorption and Separation，Institute of Polymer Chemistry，Nankai University，Tianjin 300071，China，State Key Laboratory of Functional Polymeric Materials for Adsorption and Separation，Institute of Polymer Chemistry，Nankai University，Tianjin 300071，China |
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| 基金项目： | Project supported by the Natural Science Foundation of Tianjin Science，Technology Commission |
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| 摘 要： | Seven chiral thiazolidines bound rhodium complexes were synthesized and their catalytic asymmetric hydrosilation properties were investigated It was found through investigation that the configuration of newly formed chiral centre C2 of substituted chiral thiazolidines prepared from L-cysteine or its esters has no effect on the final results of catalytic asymmetric hydrosilation.The direct reason for causing this phenomenon is reported by the present quantitative results for the first time:the rapid racemation of chiral center C2 of chiral thiazolidine ligands takes place under the catalysis of rhodium(Ⅰ) complex Rh(COD)CI]2
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| 收稿时间： | 18 January 1997 |
Application of chiral thiazolidine ligands to asymmetric hydrosilation |
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| Hong Li,Jinshui Yao,Binglin He.Application of chiral thiazolidine ligands to asymmetric hydrosilation[J].Science in China(Chemistry),1997,40(5):485-490. |
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| Authors: | Hong Li Jinshui Yao Binglin He |
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| Institution: | (1) Nankai University, State Key Laboratory of Functional Polymeric Materials for Adsorption and Separation Institute of Polymer Chemistry, 300071 Tianjin, China |
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| Abstract: | Seven chiral thiazolidines bound rhodium complexes were synthesized and their catalytic asymmetric hydrosilation properties
were investigated. It was found through investigation that the configuration of newly formed chiral centre C
2
*
of substituted chiral thiazolidines prepared from L-cysteine or its esters has no effect on the final results of catalytic
asymmetric hydrosilation. The direct reason for causing this phenomenon is reported by the present quantitative results for
the first time: the rapid racemation of chiral center C
2
*
of chiral thiazolidine ligands takes place under the catalysis of rhodium(I) complex Rh(COD)Cl]2.
Project supported by the Natural Science Foundation of Tianjin Science and Technology Commission. |
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| Keywords: | asymmetric hydrosilation chiral thiazolidine ligands chiral rhodium(I) complex acetophenone a-phenylethsnol |
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