Abstract
A three-step procedure has been developed to convert 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.
Key words
ammonium quinones - dimerizations - electrophilic aromatic substitutions - crystal structures - ammonium salts
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