Novel Heteroatom-Linked Analogues of Trityl Radicals: Diaryl(benzotriazol-1-yl)methyl Radical Dimers
作者:Alan R. Katritzky、Baozhen Yang、Naresh S. Dalal
DOI:10.1021/jo9715229
日期:1998.3.1
The lithiation of diaryl(benzotriazol-1-yl)methanes followed by addition of iodine generates phenanthridines and dimers of hitherto unknown trityl analogues in which the radical center is directly attached to a heteroatom These dimers differ from those of triarylmethyl radicals by not dissociating in solution, but variable temperature ESR measurements provided direct evidence for the formation of the corresponding diaryl(benzotriazol-1-yl)methyl radicals as intermediates in solution.
Novel tele nucleophilic aromatic substitutions in α-(benzotriazol-1-yl)alkyl aryl ketones
作者:Alan R. Katrizky、Hong Wu、Linghong Xie
DOI:10.1016/s0040-4039(96)02455-0
日期:1997.2
Reactions of α-(benzotriazol-1-yl)alkylaryl ketones 2 with alkyllithiums or Grignard reagents afforded para-alkylated products 5, via novel tele nucleophilic aromatic substitutions.