Stereoselective construction of all-carbon quaternary center by means of chiral phosphoric acid: highly enantioselective Friedel-Crafts reaction of indoles with β,β-disubstituted nitroalkenes
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作者:
Mori, Keiji
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Gakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, Tokyo 1718588, JapanGakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, Tokyo 1718588, Japan
Mori, Keiji
[1
]
Wakazawa, Manari
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Gakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, Tokyo 1718588, JapanGakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, Tokyo 1718588, Japan
Wakazawa, Manari
[1
]
Akiyama, Takahiko
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Gakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, Tokyo 1718588, JapanGakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, Tokyo 1718588, Japan
Akiyama, Takahiko
[1
]
机构:
[1] Gakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, Tokyo 1718588, Japan
We describe herein a chiral phosphoric acid catalyzed Friedel-Crafts reaction of indoles with beta-alkoxycarbonyl-beta-disubstituted nitroalkenes. A wide variety of substrates participated in this reaction to afford indoles having all-carbon quaternary centers with excellent selectivities ( up to 97% ee). Further investigation suggested that the olefin geometry and the employment of NH-indole derivatives are responsible for both reactivity and selectivity.
机构:
Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organomet Chem, Shanghai 200032, Peoples R ChinaChinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organomet Chem, Shanghai 200032, Peoples R China
Kang, Qiang
Zhao, Zhuo-An
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Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organomet Chem, Shanghai 200032, Peoples R ChinaChinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organomet Chem, Shanghai 200032, Peoples R China
Zhao, Zhuo-An
You, Shu-Li
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Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organomet Chem, Shanghai 200032, Peoples R ChinaChinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organomet Chem, Shanghai 200032, Peoples R China
机构:
Gakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, 1-5-1 Mejiro, Tokyo 1718588, JapanGakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, 1-5-1 Mejiro, Tokyo 1718588, Japan
Uchikura, Tatsuhiro
Yokohama, Sosuke
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Gakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, 1-5-1 Mejiro, Tokyo 1718588, JapanGakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, 1-5-1 Mejiro, Tokyo 1718588, Japan
Yokohama, Sosuke
Murakami, Mona
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Gakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, 1-5-1 Mejiro, Tokyo 1718588, JapanGakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, 1-5-1 Mejiro, Tokyo 1718588, Japan
Murakami, Mona
Akiyama, Takahiko
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Gakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, 1-5-1 Mejiro, Tokyo 1718588, JapanGakushuin Univ, Fac Sci, Dept Chem, Toshima Ku, 1-5-1 Mejiro, Tokyo 1718588, Japan