Preparation of 2-(1-phenyl-1<i>H</i>-pyrazol-5-yl)benzenesulfonamides from polylithiated C(α),<i>N</i>-phenylhydrazones and methyl 2-(aminosulfonyl)benzoate
作者:Michelle A. Meierhoefer、S. Patrick Dunn、Laela M. Hajiaghamohseni、Matthew J. Walters、Mildred C. Embree、Sally P. Grant、Jennifer R. Downs、Jessica D. Townsend、Clyde R. Metz、Charles F. Beam、William T. Pennington、Donald G. VanDerveer、N. Dwight Camper
DOI:10.1002/jhet.5570420609
日期:2005.9
Select C(α), N-phenylhydrazones were dilithiated in excess lithium diisopropylamide followed by condensation with methyl 2-(aminosulfonyl)benzoate and acid cyclization to afford new pyrazol-benzenesul-fonamides, 2-(1-phenyl-1H-pyrazol-5-yl)benzenesulfonamides.