A method for the synthesis of previously unknown 2-aryl-4,6-dinitrobenzo[d]isothiazolium has been developed based on the replacement of ortho-NO2 in N-(2,4,6-trinitrobenzylidene)anilines by treatment with PhCH2SH/K2CO3 followed by conversion of the resulting N-(2-benzylthio-4,6-dinitrobenzylidene)anilines with SO2Cl2.
Synthesis of 2-aryl-4,6-dinitrobenzo[d]isothiazolium from 2,4,6-trinitrotoluene
O. Yu. Sapozhnikov, V. V. Mezhnev, E. V. Smirnova, B. G. Kimel, M. D. Dutov and S. A. Shevelev, Mendeleev Commun., 2004, 14, 207 DOI: 10.1070/MC2004v014n05ABEH001913
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