Efficient soluble polymer-supported tartrate/Ti catalyst for asymmetric oxidation of prochiral sulfides |
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| Authors: | Jinshan Gao Shangzhong Liu |
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| Institution: | College of Science, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100094, PR China |
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| Abstract: | A group of soluble polymer-supported chiral tartrate ligands was prepared by liquid-phase synthesis with ligand diversity strategy. Moderate to excellent chemical yields and enantiomeric excesses were obtained by using soluble polymer-supported tartrate ester in asymmetric oxidation of prochiral sulfides using Ti(O-i-Pr)4/cumyl hydroperoxide, and the workup was greatly simplified. The influence of substituent in chiral tartrate ligands on the enantioselectivities of the reaction was disclosed. |
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