Abstract
Reactions of 2-(propargylsulfanyl)-5-methyl-1,3,4-thiadiazole, N-[5-(propargylsulfanyl)-1,3,4-thiadiazol- 2-yl]benzamide, 2-(propargylsulfanyl)-1,3-benzothiazole, and 2-(propargylsulfanyl)-4,5-dihydro-1,3- thiazole with iodine involved annulation of the unsaturated substituent with formation of fused thiazole ring. 2(5)-(Propargylsulfanyl)-1,3,4-thiadiazole derivatives reacted with bromine to give mixtures of heterocyclization products and bromine adducts to the triple bond. The bromination of 2-(propargylsulfanyl)-4,5-dihydro- 1,3-thiazole afforded only the bromine addition product to the triple bond.
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Original Russian Text © N.M. Tarasova, D.G. Kim, O.S. El’tsov, T.S. Shtukina, A.E. Borisova, 2018, published in Zhurnal Organicheskoi Khimii, 2018, Vol. 54, No. 3, pp. 463–467.
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Tarasova, N.M., Kim, D.G., El’tsov, O.S. et al. Heterocyclization of 2-(Propargylsulfanyl)-1,3-thiazole Derivatives by the Action of Halogens. Russ J Org Chem 54, 469–474 (2018). https://doi.org/10.1134/S1070428018030156
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DOI: https://doi.org/10.1134/S1070428018030156