Journal
HELVETICA CHIMICA ACTA
Volume 97, Issue 7, Pages 979-984Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/hlca.201300361
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Funding
- Bu-Ali Sina University
- Center of Excellence in Development of Environmentally Friendly Methods for Chemical Synthesis (CEDEFMCS)
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A series of pyrimido[1,2-a]benzimidazoles were obtained from aldehydes, 2-aminobenzimidazole and ethyl acetoacetate in good-to-excellent yields by a simple, mild, and efficient procedure utilizing N, N, N', N'-tetrabromobenzene-1,3-disulfonamide (TBBDA) and poly(N-bromo-N-ethylbenzene-1,3-disulfonamide) (PBBS) as catalysts.
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