The reactions of β-azolylenamines 1 with sulfonylazides 2 in acetonitrile furnished 1H-4-(azol-5-yl)-1,2,3-triazoles 3 in yields of 52–93 %. β-Benzoylenaminones and β-nitroenamine of type 1 also reacted with tosyl azide to form the same type of products 3, proving the generality and efficiency of the method for the synthesis of N-unsubstituted 1,2,3-triazoles. On the other hand, the reactions of 3-(1-aryl-1
Reactivity of 1,2,3-triazoles towards sulfonyl chlorides. A novel approach to 1- and 2-sulfonyl-4-azolyl-1,2,3-triazoles
作者:Tetyana V. Beryozkina、Ilya V. Efimov、Walter M.F. Fabian、Nikolai A. Beliaev、Pavel A. Slepukhin、Maxim L. Isenov、Wim Dehaen、Gert Lubec、Oleg S. Eltsov、Zhijin Fan、Joice Thomas、Vasiliy A. Bakulev
DOI:10.1016/j.tet.2015.06.088
日期:2015.9
The reactions of N-unsubstituted triazoles with sulfonylchlorides afforded mixtures of regioisomeric 1- and 2-sulfonyl-1,2,3-triazoles. In some cases, pure regioisomers were obtained by crystallization of mixtures of isomers. 1,2,3-Triazoles bearing thiadiazole, isoxazole and benzene rings react with mesylchloride and tosyl chloride to form mainly 1-substituted 1,2,3-triazoles. Conversely, reactions