Additive Free Greener Synthesis of 1,2-Disubstituted Benzimidazoles Using Aqueous Extract of Acacia concinna Pods as an Efficient Surfactant Type Catalyst

An efficient environmentally benign method for the synthesis of 1,2-disubstituted benzimidazole derivatives via one-pot multicomponent has been reported using aqueous extract of Acacia concinna pods as a naturally occurring surfactant type catalyst. The present surfactant medium was found superior a...

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Bibliographic Details
Published inPolycyclic aromatic compounds Vol. 41; no. 6; pp. 1263 - 1273
Main Authors Kadu, Vinod R., Chavan, Hemant V., Gholap, Somnath S.
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 22.07.2021
Taylor & Francis Ltd
Subjects
12-disubstituted benzimidazoles
Acacia
Acacia concinna
Aldehydes
Benzimidazoles
Biocompatibility
Catalysts
Diamines
green methodology
multi-component reaction
natural surfactants
Phenylenediamine
Surfactants
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Summary:An efficient environmentally benign method for the synthesis of 1,2-disubstituted benzimidazole derivatives via one-pot multicomponent has been reported using aqueous extract of Acacia concinna pods as a naturally occurring surfactant type catalyst. The present surfactant medium was found superior and additive free for the condensation of o-phenylene diamine and two equivalent of aldehyde to yield 1,2-disubstituted benzimidazole derivatives in excellent yields under mild conditions. A simple, economically viable and biocompatible catalytic system suggested the possible utility of the present protocol for the large scale construction of benzimidazole derivatives.
ISSN:1040-6638
1563-5333
DOI:10.1080/10406638.2019.1670219