One-Pot Synthesis of Cycloocta[b]indole Through Formal [5+3] Cycloaddition Using Donor-Acceptor Cyclopropanes
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作者:
Okabe, Akito
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Chiba Univ, Grad Sch Pharmaceut Sci, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, JapanChiba Univ, Grad Sch Pharmaceut Sci, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, Japan
Okabe, Akito
[1
]
Harada, Shinji
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Chiba Univ, Grad Sch Pharmaceut Sci, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, Japan
Chiba Univ, Mol Chiral Res Ctr, Inage Ku, 1-33 Yayoi Cho, Chiba 2638522, JapanChiba Univ, Grad Sch Pharmaceut Sci, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, Japan
Harada, Shinji
[1
,2
]
Takeda, Takuya
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Chiba Univ, Grad Sch Pharmaceut Sci, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, JapanChiba Univ, Grad Sch Pharmaceut Sci, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, Japan
Takeda, Takuya
[1
]
Nishida, Atsushi
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Chiba Univ, Grad Sch Pharmaceut Sci, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, Japan
Chiba Univ, Mol Chiral Res Ctr, Inage Ku, 1-33 Yayoi Cho, Chiba 2638522, JapanChiba Univ, Grad Sch Pharmaceut Sci, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, Japan
Nishida, Atsushi
[1
,2
]
机构:
[1] Chiba Univ, Grad Sch Pharmaceut Sci, Chuo Ku, 1-8-1 Inohana, Chiba 2608675, Japan
[2] Chiba Univ, Mol Chiral Res Ctr, Inage Ku, 1-33 Yayoi Cho, Chiba 2638522, Japan
A new approach to cycloocta[b]indole through formal [5+3] cycloaddition was developed. This methodology was realized by using an indole derivative as a C5 unit and a cyclopropane derivative as a C3 unit. These two units have both donor and acceptor properties. Two carbon-carbon bonds were formed stepwise by the successive addition of a Lewis acidic catalyst and a Bronsted base. The reaction could be performed as a one-pot process. Optically active cycloocta[b]indole was also synthesized by using this methodology with a chiral cyclopropane as a C3 substrate.
机构:
CSIR, Natl Chem Lab, Div Organ Chem, Dr Homi Bhabha Rd, Pune 411008, Maharashtra, India
Acad Sci & Innovat Res AcSIR, 2 Rafi Marg, New Delhi 110002, IndiaCSIR, Natl Chem Lab, Div Organ Chem, Dr Homi Bhabha Rd, Pune 411008, Maharashtra, India
Dhote, Pawan S.
Ramana, Chepuri, V
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CSIR, Natl Chem Lab, Div Organ Chem, Dr Homi Bhabha Rd, Pune 411008, Maharashtra, India
Acad Sci & Innovat Res AcSIR, 2 Rafi Marg, New Delhi 110002, IndiaCSIR, Natl Chem Lab, Div Organ Chem, Dr Homi Bhabha Rd, Pune 411008, Maharashtra, India