2-(2-thienyl)-6-methyl-6H-imidazo[4,5-g][1,3]benzothiazole: Synthesis and some transformations
- Autores: Elchaninov M.1, Pyatnitsyna E.1
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Afiliações:
- Platov Southern Russian State Polytechnic University
- Edição: Volume 87, Nº 3 (2017)
- Páginas: 420-424
- Seção: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/218673
- DOI: https://doi.org/10.1134/S1070363217030100
- ID: 218673
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Resumo
Oxidation of N-(1-methylbenzimidazol-5-yl)thiophene-2-carbothioamide with potassium ferricyanide in an alkaline medium by Jacobson’s method afforded 2-(thien-2-yl)-6-methyl-6H-imidazo[4,5-g][1,3]benzothiazole. The latter enters into the electrophilic substitution reaction (nitration, bromination, formylation, acylation) exclusively at the position 5 of the thiophene ring. Characteristic reactions of nucleophilic substitution occurred at the imidazole ring. Quaternization with methyl iodide in benzene furnished the corresponding quaternary salt, whereas the Chichibabin amination with an excess of sodium amide in xylene gave negative result.
Sobre autores
M. Elchaninov
Platov Southern Russian State Polytechnic University
Autor responsável pela correspondência
Email: elchaninov-43@mail.ru
Rússia, ul. Prosveshcheniya 132, Novocherkassk, 346428
E. Pyatnitsyna
Platov Southern Russian State Polytechnic University
Email: elchaninov-43@mail.ru
Rússia, ul. Prosveshcheniya 132, Novocherkassk, 346428