Novel Heteroatom-Substituted Trityl Radical Analogues: Preparation and Properties of Diaryl(benzotriazol-2-yl)methyl Radical Dimers
作者:Alan R. Katritzky、Baozhen Yang、David P. M. Pleynet
DOI:10.1021/jo980618f
日期:1998.12.1
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.