A study was carried out on the regioselectivity of the electrophilic heterocyclization of 4,5-disubstituted 3-allylthio-4H-1,2,4-triazoles by the action of bromine and iodine. Factors affecting the halogenation regioselectivity, namely, the nature of the electrophilic reagent and the presence of lithium perchlorate, were studied. A method was developed to obtain 5,6-dihydro-3H-[1,3]thiazolo[3,2-b]triazolium
通过
溴和
碘的作用,对4,5-二取代的3-烯丙基
硫基-4 H -
1,2,4-三唑的亲电子杂环化的区域选择性进行了研究。研究了影响卤化区域选择性的因素,即亲电试剂的性质和
高氯酸锂的存在。开发了一种获得5,6-二氢-3 H- [1,3]
噻唑并[3,2-b]三唑鎓盐的方法。这些盐的结构通过光谱方法和
化学转化得到证实。