1,3-Benzoxazoles via oxidative cyclization of corresponding o-hydroxyarylidene anilines was synthesized in the presence of KMnO4/HOAc system. This system also was applied for the one-pot synthesis of 1,3-benzoxazoles from o-amino phenols and aldehydes. The both protocols were processed at room temperature under solvent-free conditions with good to excellent yields.
                                    在KMnO4/HOAc体系的存在下,通过相应的o-羟基芳基
亚胺的氧化环化合成了1,3-
苯并恶唑。这一体系还用于从o-
氨基
酚和醛的一锅法合成1,3-
苯并恶唑。这两种方法均在室温下无溶剂条件下进行,产率良好至优秀。