共 55 条
Organocatalyzed Enantioselective Fluorocyclizations
被引:319
作者:
Lozano, Oscar
[1
]
Blessley, George
[1
]
del Campo, Teresa Martinez
[1
]
Thompson, Amber L.
[1
]
Giuffredi, Guy T.
[1
]
Bettati, Michela
[2
]
Walker, Matthew
[2
]
Borman, Richard
[2
]
Gouverneur, Veronique
[1
]
机构:
[1] Univ Oxford, Chem Res Lab, 12 Mansfield Rd, Oxford OX1 3TA, England
[2] GlaxoSmithKline R&D, Stevenage SG1 2NY, Herts, England
关键词:
alkaloids;
asymmetric catalysis;
fluorocyclizations;
indoles;
organocatalysis;
ASYMMETRIC IODOCYCLIZATION;
FLUORINATION;
IODOCARBOCYCLIZATION;
HALOCYCLIZATION;
BROMOLACTONIZATION;
IODOLACTONIZATION;
COMPLEXES;
D O I:
10.1002/anie.201103151
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Enantioenriched fluorinated heterocycles can be prepared through fluorocyclizations of prochiral indoles (see scheme; Ts=tosyl, Bn=benzyl, Boc=tert-butoxycarbonyl). More than twenty examples for this cascade fluorination-cyclization, which is catalyzed by cinchona alkaloids and employs N-fluorobenzenesulfonimide as the electrophilic fluorine source have been explored, and an unprecedented catalytic asymmetric difluorocyclization has also been identified. © 2011 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
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页码:8105 / 8109
页数:5
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