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An Efficient Rapid Synthesis of Benzoxazoles and Benzothiazoles Using PMA.SiO2 at Room Temperature under Heterogeneous Conditions
Letters in Organic Chemistry ( IF 0.7 ) Pub Date : 2021-07-31 , DOI: 10.2174/1570178617999200922152142 Chithaluri Sudhakar 1 , Vanam Shekar 2 , Manchi Shyamsunder 1 , Adurthi Suryakumari 1 , Vala Manojkumar 1
中文翻译:
在多相条件下,在室温下使用 PMA.SiO 2高效快速合成苯并恶唑和苯并噻唑
更新日期:2021-07-01
Letters in Organic Chemistry ( IF 0.7 ) Pub Date : 2021-07-31 , DOI: 10.2174/1570178617999200922152142 Chithaluri Sudhakar 1 , Vanam Shekar 2 , Manchi Shyamsunder 1 , Adurthi Suryakumari 1 , Vala Manojkumar 1
Affiliation
Treatment of 2-aminophenol (or 2-aminothiophenol) with aromatic aldehydes in the presence of phosphomolybdic acid on silica at room temperature affords the corresponding benzoxazoles (or benzothiazoles) in excellent yields (88-96%) under heterogeneous conditions. Benzoxazoles and benzothiazoles are formed in less than 10 min.
中文翻译:
在多相条件下,在室温下使用 PMA.SiO 2高效快速合成苯并恶唑和苯并噻唑
在磷钼酸的存在下,在室温下在二氧化硅上用芳香醛处理 2-氨基苯酚(或 2-氨基苯硫酚),在非均相条件下以极好的收率(88-96%)得到相应的苯并恶唑(或苯并噻唑)。苯并恶唑和苯并噻唑可在 10 分钟内形成。