Synthesis and Properties of Azoles Containing Benzothiazole Substituents
β Scribed by V. I. Kelarev; K. I. Kobrakov; I. I. Rybina
- Publisher
- John Wiley and Sons
- Year
- 2004
- Weight
- 52 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0931-7597
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π SIMILAR VOLUMES
Synthesis of new azolyl azoles and azinyl azoles from the reaction of compounds 1, 4 and 7 with phenyl isothiocyanate is reported. Compound 10 reacts with benzene diazonium chloride to yield either phenylhydrazones 11 and 12 or the triazoloquinoline 13.
Pyrazinoindoloquinone 6 was synthesized by alkylation of ethyl 4,7-dimethoxyindole-2-carboxylate (1), followed by cyclization of the N-bromoethyl derivative 2b in the presence of ammonia. Oxidative demethylation of 2b and of the oxopyrazinoindole 3 with silver(II) oxide furnished quinones 5b and 6.