Synthesis of novel benzimidazo[1,2-c][1,2,4]triazolo[4,3-a]quinazoline derivatives
Cyclocondensation of 2-(1H-benzimidazol-2-yl)anilines 1a,b with carbon disulfide in the presence of potassium t-butoxide in boiling DMF afforded the corresponding benzimidazo[1,2-c]quinazoline-6(5H]-thiones 2a,b. Treatment of these compounds with hydrazine hydrate at reflux in ethanol gave the hydra...
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Published in | Journal of chemical research Vol. 2007; no. 5; pp. 257 - 258 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
LONDON
Sage
01.05.2007
Sage Publications Ltd |
Subjects | |
Online Access | Get full text |
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Summary: | Cyclocondensation of 2-(1H-benzimidazol-2-yl)anilines 1a,b with carbon disulfide in the presence of potassium t-butoxide in boiling DMF afforded the corresponding benzimidazo[1,2-c]quinazoline-6(5H]-thiones 2a,b. Treatment of these compounds with hydrazine hydrate at reflux in ethanol gave the hydrazine derivatives 3a,b which were subsequently cyclised to the title compounds 4a-f on heating with orthoesters in ethanol. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 1747-5198 2047-6507 |
DOI: | 10.3184/030823407x209741 |