We report a highly branch-selective and enantioselective allylic alkylation of simple ketones with racemic aliphatic allylic carbonates under mild conditions. By using a Rh-bisoxazolinephosphine system and catalytic amounts of a base in THF, a series of chiral beta-branched gamma,delta-unsaturated ketones were obtained with excellent regio- and enantioselectivities. An outer-sphere nucleophilic substitution C-C bond-formation process is proposed on the basis of mechanistic studies.
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Henan Normal Univ, Sch Environm, Xinxiang 453007, Henan, Peoples R ChinaHenan Normal Univ, Sch Environm, Xinxiang 453007, Henan, Peoples R China
Liang, Lei
Xie, Ming-Sheng
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Henan Normal Univ, Sch Chem & Chem Engn, Henan Key Lab Organ Funct Mol & Drugs Innovat, Xinxiang 453007, Henan, Peoples R ChinaHenan Normal Univ, Sch Environm, Xinxiang 453007, Henan, Peoples R China
Xie, Ming-Sheng
Qin, Tao
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Henan Normal Univ, Sch Chem & Chem Engn, Henan Key Lab Organ Funct Mol & Drugs Innovat, Xinxiang 453007, Henan, Peoples R ChinaHenan Normal Univ, Sch Environm, Xinxiang 453007, Henan, Peoples R China
Qin, Tao
Zhu, Man
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Henan Normal Univ, Sch Chem & Chem Engn, Henan Key Lab Organ Funct Mol & Drugs Innovat, Xinxiang 453007, Henan, Peoples R ChinaHenan Normal Univ, Sch Environm, Xinxiang 453007, Henan, Peoples R China
Zhu, Man
Qu, Gui-Rong
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Henan Normal Univ, Sch Chem & Chem Engn, Henan Key Lab Organ Funct Mol & Drugs Innovat, Xinxiang 453007, Henan, Peoples R ChinaHenan Normal Univ, Sch Environm, Xinxiang 453007, Henan, Peoples R China
Qu, Gui-Rong
Guo, Hai-Ming
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Henan Normal Univ, Sch Environm, Xinxiang 453007, Henan, Peoples R China
Henan Normal Univ, Sch Chem & Chem Engn, Henan Key Lab Organ Funct Mol & Drugs Innovat, Xinxiang 453007, Henan, Peoples R ChinaHenan Normal Univ, Sch Environm, Xinxiang 453007, Henan, Peoples R China