Facile Synthesis of 2‐Methylenebenzothiazoles from Benzothiazole Salts and 4‐Hydroxycoumarins by Ball Milling

A simple and practical method for the synthesis of 2‐methylenebenzothiazoles via the coupling of a benzothiazole salts and 4‐hydroxycoumarins have been described herein. The reaction showed a good substrate range and functional compatibility under mechanochemical conditions, and proceeded without ca...

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Published inChemistry, an Asian journal Vol. 17; no. 22; pp. e202200843 - n/a
Main Authors Xu, Shengting, Chen, Wantao, Yang, Xiaotong, Shi, Jianyi, Mai, Zuyu, Zhu, Zhongzhi, Chen, Ling, Chen, Xiuwen
Format Journal Article
LanguageEnglish
Published Weinheim Wiley Subscription Services, Inc 16.11.2022
Subjects
4-Hydroxycoumarins
aggregation-induced emission
Ball milling
benzothiazole salts
Chemistry
Fluorescence
mechanochemistry
Substrates
Synthesis
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Summary:A simple and practical method for the synthesis of 2‐methylenebenzothiazoles via the coupling of a benzothiazole salts and 4‐hydroxycoumarins have been described herein. The reaction showed a good substrate range and functional compatibility under mechanochemical conditions, and proceeded without catalysts or solvents. The 2‐methylenebenzothiazoles products were achieved via the formation of a C=C double bond and exhibited strong luminescence and typical aggregation‐induced emission (AIE) properties, indicating their potential for use as fluorescent materials. A simple and practical method for the synthesis of 2‐methylenebenzothiazoles by coupling of benzothiazole salts and 4‐hydroxycoumarins under mechanochemical conditions has been developed. Some of the products exhibited strong luminescence and typical AIE properties, indicating their potential as fluorescent materials.
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ISSN:1861-4728
1861-471X
DOI:10.1002/asia.202200843