Cellulose Sulfuric Acid: Novel and Efficient Biodegradable and Recyclable Acid Catalyst for the Solid-State Synthesis of Thiadiazolo Benzimidazoles

An efficient method for the synthesis of 2-substituted benzimidazoles has been developed. In this method, benzo[c][1,2,5]thiadiazole-4,5-diamine was condensed with different aldehydes in the presence of cellulose sulfuric acid under solvent-free conditions by simple physical grinding of reactants us...

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Bibliographic Details
Published inSynthetic communications Vol. 41; no. 5; pp. 662 - 669
Main Authors Kuarm, B. Suresh, Madhav, J. Venu, Rajitha, B., Reddy, Y. Thirupathi, Reddy, P. Narsimha, Crooks, Peter A.
Format Journal Article
LanguageEnglish
Published PHILADELPHIA Taylor & Francis Group 01.01.2011
Taylor & Francis
Taylor & Francis Ltd
Subjects
Benzimidazoles
benzo[c][1,2,5]thiadiazole-4,5-diamine
cellulose sulfuric acid
Chemistry
Chemistry, Organic
different aldehydes
Physical Sciences
Science & Technology
Sulfuric acid
OXIDATION
PHASE SYNTHESIS
Benzimidazoles
SERIES
ONE-POT SYNTHESIS
5]thiadiazole-4
ALDEHYDES
different aldehydes
SUBSTITUTED BENZIMIDAZOLE
2
5-diamine
INDOLE
cellulose sulfuric acid
RING
CONDENSATION
AGENTS
benzo[c]
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Summary:An efficient method for the synthesis of 2-substituted benzimidazoles has been developed. In this method, benzo[c][1,2,5]thiadiazole-4,5-diamine was condensed with different aldehydes in the presence of cellulose sulfuric acid under solvent-free conditions by simple physical grinding of reactants using a mortar and pestle at room temperature. The methodology is mild, high-yielding, and green, and the catalyst could be easily recycled.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0039-7911
1532-2432
DOI:10.1080/00397911003632899