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Enantioselective Synthesis of Unsymmetrical Triarylmethanes by Chiral Bronsted Acids
被引:154
作者:
Sun, Feng-Lai
[1
]
Zheng, Xiao-Jian
[1
]
Gu, Qing
[1
]
He, Qing-Li
[1
]
You, Shu-Li
[1
]
机构:
[1] Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, Shanghai 200032, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Chiral Bronsted acids;
Enantioselectivity;
Friedel-Crafts reaction;
Indole;
Organocatalysis;
FRIEDEL-CRAFTS REACTION;
ELECTRON-RICH ARENES;
ARYLBORONIC ACIDS;
PHOSPHORIC-ACIDS;
ALKYLATION;
INDOLES;
IMINES;
DERIVATIVES;
CATALYST;
ACCESS;
D O I:
10.1002/ejoc.200901164
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
Chiral Bronsted acid catalyzed Friedel-Crafts alkylation of electron-rich arenes with (3-indolyl)methanamines has been realized to provide an efficient synthesis of enantioenriched unsymmetrical triarylmethanes. With 5 mol-% of a newly developed chiral phosphoric acid, the enantioenriched unsymmetrical triarylmethanes were obtained in excellent yields with up to 91 % ee.
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页码:47 / 50
页数:4
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