Abstract
Quinoxaline derivatives are widely used in dyes, electroluminescent materials and organic semiconductors. An economic and convenient strategy for the synthesis of 2-phenyl-quinoxaline is described. The approach relies on the oxidation of acetophenones by [hydroxy(tosyloxy)iodo]benzene, followed by tandem nucleophilic substitution with o-phenylenediamines, dehydration cyclisation and dehydrogenation. The method was performed in two stages as a one-pot reaction.
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