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REACTIONS OF N-SULFONYL-1,2,3-THIADIAZOLE-4-CARBIMIDAMIDES WITH SULFONYL CHLORIDES: REGIOSPECIFIC SYNTHESIS AND STRUCTURE OF 2-SULFONYL-1,2,3-TRIAZOLES

Татьяна В. Березкина, Валерий О. Филимонов, Лидия Н. Дианова, Павел А. Слепухин, Дмитрий М. Мазур, Татьяна А. Поспелова, Василий А. Бакулев
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Abstract


Sulfonylation of 1,2,3-thiadiazolecarboxylic acid amidines in the presence of a base was found to be accompanied by the Cornforth rearrangement of the 1,2,3-thiadiazole ring into 1,2,3-triazole leading to the formation of 2-substituted 1,2,3-triazoles in high yields.

Keywords


N-sulfonyl amidines, 2-sulfonyl-1,2,3-triazoles, sulfonyl chlorides, 1,2,3-thiadiazoles, rearrangement.

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