Efficient and Facile One-Pot Synthesis of Novel Benzimidazoles using Rice Husk

Efficient and Facile One-Pot Synthesis of Novel Benzimidazoles using Rice Husk

Suman

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Rajvir Singh

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Susheel Gulati

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Suprita

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Efficient and Facile One-Pot Synthesis of Novel Benzimidazoles using Rice Husk

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Abstract

New and facile one-pot approach for the synthesis of substituted benzimidazoles from the reaction of substituted benzaldehyde and o-phenylenediamine room temperature using Rice Husk Ash: CaCl 2 (RHA:CaCl 2 ) as a green catalyst was presented in the paper. After the completion of the reaction, the reaction mixture was poured into ice-coldwater with stirring, and the precipitated product was filtered using the filter pump. The crude product was then recrystallized from ethanol to give analytically pure samples in good to excellent yield. The purity of compounds were characterized by melting point and thin-layer chromatography. The synthesized compounds were characterized by using 1 HNMR and FTIR spectral techniques. Metal-free, short reaction time, high yields, mild reaction condition, simple work-up, high atom economy, cost-effectiveness, and no need for column purification are some beauties of this methodology.

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Suman. 2020. \u201cEfficient and Facile One-Pot Synthesis of Novel Benzimidazoles using Rice Husk\u201d. Global Journal of Science Frontier Research - B: Chemistry GJSFR-B Volume 20 (GJSFR Volume 20 Issue B1).

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GJSFR Volume 20 Issue B1

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Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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GJSFR-B Classification FOR Code: 030299

Submission ReceivedMarch 15, 2020
Peer Review Double Blind
Handling Editor
Accepted April 6, 2020
Published April 19, 2020

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v1.2

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March 11, 2020

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