Unsymmetrical Benzotristhiazole: A New Electron‐Withdrawing Core for Octupolar Chromophores |
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| Authors: | Andrea Fülöpová Peter Magdolen Miroslava Károlyiová Ivica Sigmundová Pavol Zahradník |
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| Affiliation: | Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University, , 84215 Bratislava, Slovakia |
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| Abstract: | A six‐step synthesis of the unsymmetrical trimethylbenzotristhiazole has been developed. Starting from 2‐methylbenzothiazole following nitration, reduction, acetylation, thionation, and twofold cyclization, the desired trimethylbenzotristhiazole was obtained in good yield. Its condensation with donor‐substituted benzaldehydes presents the way to new octupolar chromophores. The attempt to synthesize such benzotristhiazole from dinitroaniline failed; this procedure afforded a new benzimidazole derivative. |
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| Keywords: | benzotristhiazole chromophore nonlinear optics |
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