caa a22 4500 445876778 CHVBK 20180317145530.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s10593-011-0870-5 doi (NATIONALLICENCE)springer-10.1007/s10593-011-0870-5 Electrophilic heterocyclization of 4,5-disubstituted 3-allylthio-4 H -1,2,4-triazoles by the action of halogens [Elektronische Daten] [R. Usenko, M. Slivka, V. Lendel] 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 salts. The structure of these salts was confirmed by spectral methods and chemical transformations. Springer Science+Business Media, Inc., 2011 3-allylthio-1,2,4-triazole nationallicence bromine nationallicence iodine nationallicence 5,6-dihydro-3 H -[1,3]thiazolo[3,2- b ]triazolium salts nationallicence heterocyclization nationallicence regioselectivity nationallicence Usenko R. Uzhgorod National University, 53/1 O. Fedintsa St., 88000, Uzhgorod, Ukraine aut Slivka M. Uzhgorod National University, 53/1 O. Fedintsa St., 88000, Uzhgorod, Ukraine aut Lendel V. Uzhgorod National University, 53/1 O. Fedintsa St., 88000, Uzhgorod, Ukraine aut Chemistry of Heterocyclic Compounds Springer US; http://www.springer-ny.com 47/8(2011-11-01), 1029-1036 0009-3122 47:8<1029 2011 47 10593 https://doi.org/10.1007/s10593-011-0870-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10593-011-0870-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Usenko R. Uzhgorod National University, 53/1 O. Fedintsa St., 88000, Uzhgorod, Ukraine aut NATIONALLICENCE 700 1- Slivka M. Uzhgorod National University, 53/1 O. Fedintsa St., 88000, Uzhgorod, Ukraine aut NATIONALLICENCE 700 1- Lendel V. Uzhgorod National University, 53/1 O. Fedintsa St., 88000, Uzhgorod, Ukraine aut NATIONALLICENCE 773 0- Chemistry of Heterocyclic Compounds Springer US; http://www.springer-ny.com 47/8(2011-11-01), 1029-1036 0009-3122 47:8<1029 2011 47 10593 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer