Efficient microwave-assisted synthesis of 3-benzothiazolo and 3-benzothiazolino coumarin derivatives catalyzed by heteropoly acids
…, AR Foroumadi, H Hamadi, Z Hojjati, A Shafiee
Index: Khoobi; Ramazani; Foroumadi; Hamadi; Hojjati; Shafiee Journal of the Iranian Chemical Society, 2011 , vol. 8, # 4 p. 1036 - 1042
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Citation Number: 19
Abstract
Abstract Heteropoly acids are reported as efficient catalysts for the microwave-assisted synthesis of 3-benzothiazolo and 3-benzothiazolino coumarin from o-aminothiophenol derivatives with 3-acetly and 3-cyanochromen-2-one in good to excellent isolated yields (73– 95%). This study suggests new techniques for the synthesis of chromene derivatives using an inexpensive and easily available catalyst, a simple procedure, short reaction time, and ...
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