Journal
GREEN CHEMISTRY LETTERS AND REVIEWS
Volume 14, Issue 4, Pages 610-617Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17518253.2021.1991483
Keywords
Benzimidazoles; mortar-pestle grinding; acetic acid; green chemistry
Funding
- Natural Science Foundation of China [21472128]
- Natural Science Foundation of Fujian Province [2016J01686, 2016Y9051, 2017J01574, 2015J01316]
- Sichuan Science and Technology Program [2018JY560]
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An environmentally friendly and efficient protocol for the synthesis of benzimidazoles using mortar-pestle grinding technique in the presence of acetic acid as a catalyst is reported. The mechanochemical method involves the condensation of aldehyde and o-phenylenediamine followed by cyclization reaction, leading to high yields up to 97%. This protocol is also applicable for the synthesis of benzothiazoles and benzoxazoles.
An environmentally friendly and efficient protocol for the synthesis of benzimidazoles by mortar-pestle grinding technique in the presence of acetic acid as a catalyst is reported. This mechanochemical method proceeded with the condensation of aldehyde and o-phenylenediamine followed by cyclization reaction, leading to the formation of the corresponding benzimidazoles in yields up to 97%. This protocol could also be applied for the synthesis of benzothiazoles and benzoxazoles.
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