Oxidative annulation of acetophenones and 2-aminobenzothiazoles catalyzed by reusable nickel-doped LaMnO3 perovskites

Synthesis of imidazole[2,1-b]benzothiazoles often suffers from the use of pre-functionalized substrates and/or homogeneous, non-recyclable catalytic systems. Herein we report a method for direct coupling of acetophenones and 2-aminobenzothiazoles in the presence of reusable perovskites, namely LaMn0...

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Published inRSC advances Vol. 13; no. 5; pp. 3341 - 3345
Main Authors Pham, Phuong T, Nguyen, Duyen K, Phan, Nam T S, Le, Minh-Vien, Nguyen, Tung T
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 23.01.2023
The Royal Society of Chemistry
Subjects
Aminobenzothiazoles
Chemical reactions
Chemistry
Imidazole
Lanthanum compounds
Perovskites
Substrates
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ISSN2046-2069
2046-2069
DOI10.1039/d2ra08045a

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Summary:Synthesis of imidazole[2,1-b]benzothiazoles often suffers from the use of pre-functionalized substrates and/or homogeneous, non-recyclable catalytic systems. Herein we report a method for direct coupling of acetophenones and 2-aminobenzothiazoles in the presence of reusable perovskites, namely LaMn0.95Ni0.05O3. Imidazole[2,1-b]benzothiazoles were obtained in moderate to good yields and contained an array of useful functionalities. Control experiments indicated that the perovskites played pivotal roles in halogenation and condensation steps.
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ISSN:2046-2069
2046-2069
DOI:10.1039/d2ra08045a