Another route to the synthesis of nitro, amino, and acetamino derivatives of 2,3-dimethylbenzofuran was explored. The cyclo-dehydration of 3-(m- and p-nitrophenoxy)butanones by means of polyphosphoric acid or sulfuric acid afforded 2,3-dimethyl-4- and -5-nitrobenzofurans, which were then converted by reduction to the corresponding 4- and 5-aminobenzofurans. The 4-, 5-, 6-, and 7-aminobenzofurans were