Abstract
An acid-catalyzed reaction of substituted 5-chloro-2-methylbenzothiazoles with 3,4,5,6-tetrachloro-1,2-benzoquinone leads to 5,6,7-trichloro-2-(5-chlorobenzothiazol-2-yl)-1,3-tropolone and 4,5,6,7-tetrachloro-2-(5-chlorobenzothiazol-2-yl)-1,3-tropolone. Molecular structure of 4,5,6,7-tetrachloro-2-(5-chlorobenzothiazol-2-yl)-1,3-tropolone was established by X-ray crystallography.
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V. I. Minkin, S. M. Aldoshin, V. N. Komissarov, I. V. Dorogan, Yu. A. Sayapin, V. V. Tkachev, A. G. Starikov, Izv. Akad. Nauk, Ser. Khim., 2006, 1956 [Russ. Chem. Bull., Int. Ed., 2006, 55, 2032].
Yu. A. Sayapin, B. N. Duong, V. N. Komissarov, I. V. Dorogan, N. I. Makarova, I. O. Bondareva, V. V. Tkachev, G. V. Shilov, S. M. Aldoshin, V. I. Minkin, Tetrahedron, 2010, 66, 8763.
Yu. A. Sayapin, V. N. Komissarov, V. I. Minkin, V. V. Tkachev, S. M. Aldoshin, G. V. Shilov, Zh. Org. Khim., 2005, 41, 1571 [Russ. J. Org. Chem. (Engl. Transl.), 2005, 41].
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1362–1364, July, 2011.
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Bondareva, I.O., Sayapin, Y.A., Komissarov, V.N. et al. New 2-(benzothiazol-2-yl)-1,3-tropolones derived from 3,4,5,6-tetrachloro-1,2-benzoquinone. Russ Chem Bull 60, 1384–1386 (2011). https://doi.org/10.1007/s11172-011-0207-7
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DOI: https://doi.org/10.1007/s11172-011-0207-7