Abstract:A study was carried out on the regioselectivity of the electrophilic halocyclization of 4‐allyl‐5‐substituted‐2,4‐dihydro‐3H‐1,2,4‐triazol‐3‐thiones by the action of bromine and iodine. It was revealed which factors influence the structure of the reaction products. 6‐(Bromomethyl)‐3‐substituted‐5,6‐dihydrothiazolo[2,3‐c]‐[1,2,4]triazoles have been shown to be good starting materials for the synthesis of polyheterocyclic systems containing a 1,2,3‐triazole ring. In contrast, 6‐iodo‐3‐substituted‐6,7‐dihydro‐5H‐… Show more
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