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  • Reactions of arylglyoxals w...
    Kong, Yung Cheol; Kim, Kyongtae

    Journal of heterocyclic chemistry, July/August 1999, Letnik: 36, Številka: 4
    Journal Article

    Treatment of arylglyoxal monohydrates with tetrasulfur tetranitride in p‐dioxane at reflux afforded 2‐aroyl‐5‐arylimidizoles and 2‐aroyl‐5‐aryloxazoles in 10 to 31% and 17 to 32% yields, respectively. With non‐hydrate of arylglyoxals, yields of the latter increase somewhat, whereas essentially no changes in yields of the former were observed. A mechanism is proposed for the formation of the products.