Anchored Synthesis for Some Novel Mono and Disarylazo 1,2,4-Benzothiadiazine-Based Dyestuffs as Alternatives for Benzidine-Based Dyes |
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| Authors: | M A Hanna A A Al-Sarawy I G Rashed H F Elgamal F K M Wali |
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| Institution: | 1. Damietta Faculty of Science , Mansoura University , Mansoura , Egypt;2. Mansoura Faculty of Engineering , Mansoura University , Mansoura , Egypt |
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| Abstract: | A one mono and two disarylazo series of 1,2,4-benzothiadiazine-based dyestuffs has been synthesized with a view that these products, with their new all-round tinctorial properties, might find an application as new categories of direct dyes that satisfactorily replace prohibited benzidine-based dyes. The assigned structures for the hitherto prepared dyes were confirmed on the basis of elemental analysis as well as spectral data and, whenever possible, by alternative synthetic routes. Moreover, the predominant tautomeric structures for these highly colored products were tested and discussed on the basis of their spectral behavior. |
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| Keywords: | 1 2 4-Benzothiadiazine-based dyes benzidine-based dyes alternatives mono and disarylhydrazono dyes predominant tautomeric structures |
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