Tungstate sulfuric acid as an efficient catalyst for the synthesis of benzoxazoles and benzothiazoles under solvent-free conditions

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• 作者：Mahnaz Farahi ; Bahador Karami ; Masume Azari
• 关键词：Heterogeneous catalysis ; Tungstate sulfuric acid ; Benzoxazoles ; Benzothiazoles ; Orthoesters
• 刊名：Comptes Rendus Chimie
• 出版年：2013
• 出版时间：November, 2013
• 年：2013
• 卷：16
• 期：11
• 页码：1029-1034
• 全文大小：1191 K

文摘

Tungstate sulfuric acid (TSA) has been found to be an efficient and reusable catalyst for the synthesis of benzoxazole and benzothiazole derivatives via reactions of orthoesters with o-aminophenols or o-aminothiophenols in high yields.