Preparation of Mesoporous SBA-16 Silica-Supported Biscinchona Alkaloid Ligand for the Asymmetric Dihydroxylation of Olefins
Optically active cinchona alkaloid was anchored onto mesoporous SBA-16 silica and the as-prepared complex was used as a heterogeneous chiral ligand of osmium tetraoxide for the asymmetric dihydroxylation of olefins. The prepared catalytic system provided 90–93% yield of vicinal diol with 92–99% enan...
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| Main Authors: | , , , |
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| 格式: | Article |
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Hindawi Publishing Corporation
2014
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| 在线阅读: | http://dx.doi.org/10.1155/2014/123680 http://dx.doi.org/10.1155/2014/123680 http://umpir.ump.edu.my/6131/1/Preparation_of_Mesoporous_SBA-16_Silica-Supported_Biscinchona_Alkaloid_Ligand_for_the_Asymmetric_Dihydroxylation_of_Olefins.pdf |
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| 总结: | Optically active cinchona alkaloid was anchored onto mesoporous SBA-16 silica and the as-prepared complex was used as a heterogeneous chiral ligand of osmium tetraoxide for the asymmetric dihydroxylation of olefins. The prepared catalytic system provided 90–93% yield of vicinal diol with 92–99% enantioselectivity. The ordered mesoporous SBA-16 silica was found to be a valuable support for the cinchona alkaloid liganded osmium catalyst system which is frequently used in chemical industries and research laboratories for olefin functionalization. |
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