作者:Oscar Lozano、George Blessley、Teresa Martinez del Campo、Amber L. Thompson、Guy T. Giuffredi、Michela Bettati、Matthew Walker、Richard Borman、Véronique Gouverneur
DOI:10.1002/anie.201103151
日期:2011.8.22
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