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Al-Pillared Ghassoulite Clay as a New Green Catalyst for the Synthesis of Benzothiazoles and Benzimidazoles: Effect of Amine/CEC Ratio

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Author(s): Rachid Azzallou | Rachid Mamouni | Kimberly Stieglitz | Nabil Saffaj | Mohammadine El Haddad | Said Lazar

Journal: International Journal of Organic Chemistry
ISSN 2161-4687

Volume: 03;
Issue: 02;
Start page: 151;
Date: 2013;
Original page

Keywords: Cation Exchange Capacity (x CEC) | Benzimidazole | Benzothiazole | Catalyst | Pillared

ABSTRACT
Catalysts based on pillared clays were synthesized, by preadsorption of amines between the clay layers prior to pillaring with aluminium precursora, from Moroccan Ghassoulite clay. A comparison of catalytic activity, in the synthesis of benzothiazole and benzimidazole derivatives, of these catalysts is discussed. It is shown that Al-pillared (x CEC) catalyst can be quantitatively recovered and be reused effectively for many times.
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