Gas phase rearrangement reactions of 2-(arylamino)phenylaminyl radicals
Abstract
Generation of the aminyl radicals (1; X = Y = NH, R = H or Me) by flash vacuum pyrolysis leads to diphenylamines, phenazines, and aminocarbazoles. 15N-Labelling studies have shown that the diphenylamine and phenazine products arise by equilibration of the initial aminyl radical via the spirodienyl radical (4; X = Y = NH).