Wf. Bailey et Mw. Carson, REACTION OF ORGANOLITHIUMS WITH FLUORO-N,N-DIALLYLANILINES - A BENZYNE-MEDIATED ANIONIC CASCADE LEADING TO 3,4-DISUBSTITUTED INDOLINES, Tetrahedron letters, 38(8), 1997, pp. 1329-1332
Regioselective ortho-lithiation of either 2-fluoro- (2) or 3-fluoro-N,
N-diallylaniline (3) initiates an anionic cascade leading to an N-ally
l-3,4-disubstitutedindoline. The transformation involves loss of LiF f
rom the ortho-lithiated species, regioselective intermolecular additio
n of the organolithium to the benzyne intermediate, and cyclization of
the resulting [6-substituted-2-(N,N-diallylamino)phenyl]lithium. (C)
1997 Elsevier Science Ltd.