We report the first intramolecular enantio-selective cyclopropanation of indoles, which was accomplished in good to high yield (up to 94%) with excellent enantioselectivity (up to >99.9% ee) by using copper or iron complexes of chiral spiro bisoxazolines as catalysts. This reaction is a straightforward, efficient method for constructing polycyclic compounds with an all-carbon quaternary stereogenic center at the 3-position of the indole skeleton, a core structure shared by numerous natural products and bioactive compounds.
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Chinese Acad Sci, Univ Chinese Acad Sci, Shanghai Inst Organ Chem, Key Lab Organofluorine Chem, 345 Lingling Rd, Shanghai 200032, Peoples R ChinaChinese Acad Sci, Univ Chinese Acad Sci, Shanghai Inst Organ Chem, Key Lab Organofluorine Chem, 345 Lingling Rd, Shanghai 200032, Peoples R China
Duan, Yaya
Lin, Jin-Hong
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Chinese Acad Sci, Univ Chinese Acad Sci, Shanghai Inst Organ Chem, Key Lab Organofluorine Chem, 345 Lingling Rd, Shanghai 200032, Peoples R ChinaChinese Acad Sci, Univ Chinese Acad Sci, Shanghai Inst Organ Chem, Key Lab Organofluorine Chem, 345 Lingling Rd, Shanghai 200032, Peoples R China
Lin, Jin-Hong
Xiao, Ji-Chang
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Chinese Acad Sci, Univ Chinese Acad Sci, Shanghai Inst Organ Chem, Key Lab Organofluorine Chem, 345 Lingling Rd, Shanghai 200032, Peoples R ChinaChinese Acad Sci, Univ Chinese Acad Sci, Shanghai Inst Organ Chem, Key Lab Organofluorine Chem, 345 Lingling Rd, Shanghai 200032, Peoples R China
Xiao, Ji-Chang
Gu, Yu-Cheng
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Syngenta, Jealotts Hill Int Res Ctr, Bracknell RG42 6EY, Berks, EnglandChinese Acad Sci, Univ Chinese Acad Sci, Shanghai Inst Organ Chem, Key Lab Organofluorine Chem, 345 Lingling Rd, Shanghai 200032, Peoples R China