KATRITZKY, A. R.;COZENS, A. J., J. CHEM. SOC. PERKIN TRANS., 1983, N 11, 2611-2615
作者:KATRITZKY, A. R.、COZENS, A. J.
DOI:——
日期:——
Nucleophilic displacements of N-aryl and heteroaryl groups. Part 3. Pyrylium-mediated synthesis of unsymmetrical diarylamines from anilines
作者:Alan R. Katritzky、Andrew J. Cozens
DOI:10.1039/p19830002611
日期:——
thionyl chloride followed by an aniline to give the amides (4)(70%). Refluxing in toluene with sodium hydride for 12 h transfers intramolecularly the 1-aryl group of the pyridinium salt (4) to the nitrogen of the amide. Aqueous work-up cleaves (6) and the diarylamine is purified by sublimation (60%)(overall yield ca. 30%).