3-Allyl-2-benzothiazolethione reacts with iodine regiospecifically with annelation of the five-membered ring, while with bromine a mixture of the five- and six-membered rings are formed. 2-Allylthioben- zothiazole reacts with halogens with annelation of the five- and six-membered rings, while 2-(2-methyl-2-propenyl)thiobenzothiazole is annelated at the five-membered ring.
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Celebrating the jubilee of Academician of the Russian Academy of Sciences V. N. Charushin.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, 760–765, May 2011.
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Kim, D.G., Sudolova, N.M. & Slepuhin, P.A. Investigation of the halocyclization of S- and N-allyl derivatives of 2-benzothiazolethione. Chem Heterocycl Comp 47, 631–635 (2011). https://doi.org/10.1007/s10593-011-0808-y
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DOI: https://doi.org/10.1007/s10593-011-0808-y