Application of nano SnO2 as an efficient and benign catalyst has been explored for the synthesis of 2-aryl or alkylbenzoxazole derivatives via condensation reaction of aldehyde with 2-aminophenol. The reactions proceed under heterogeneous and mild conditions in ethanol at room temperature to provide 2-aryl or alkylbenzoxazoles in high yields.
纳米SnO2作为高效且温和的催化剂在合成2-芳基或烷基苯并
噁唑衍
生物方面得到了探索,方法是通过醛与2-
氨基
酚的缩合反应。反应在室温下的
乙醇中以异相和温和条件进行,能够高产率地提供2-芳基或烷基苯并
噁唑。