Unexpected dimeric products from the amidomethylation of pentasubstituted benzenes
作者:David Wiedenfeld、Mark A. Minton、Vladimir N. Nesterov、David R. Glass、Crystal L. Montoya
DOI:10.1016/j.tetlet.2004.03.175
日期:2004.5
An isomeric series of unexpected diarylmethane products with flexible substituents, isolated from amidomethylation reactions of p-dimethoxybenzene derivatives, was analyzed by X-ray crystallography to reveal novel solid-state structures, two of which have identical elemental cell parameters.
作者:David Wiedenfeld、Mark A. Minton、David R. Glass、Vladimir N. Nesterov、Kila D. Nsamenang、Dong Han
DOI:10.1055/s-2005-865296
日期:——
substituted p-dimethoxybenzenes to quinone ammonium salts. Five examples of quinone ammonium salts have been prepared with this procedure. In the first step, the aromatic species is reacted with N-(hydroxymethyl)trifluoroacetamide and trifluoroacetic acid. The trifluoroacetamide product is then oxidatively demethylated and finally hydrolyzed to afford the quinone ammonium salt.