A method is provided for the preparation of 2-arylbenzoxazoles and 2-arylbenzthiazoles which comprises reacting a trichloromethyl-substituted aromatic compound with an aromatic compound carrying one amino group and one hydroxy or mercapto group in ortho position to each other. The compounds obtained by the process of the invention form the basis of numerous optical brighteners and find use in dyes, cosmetics, pharmaceuticals and heat-resistant fibers.
本发明提供了一种制备2-芳基苯并
噁唑和2-芳基
苯并噻唑的方法,包括将一种三
氯甲基取代的芳香化合物与一种带有一个
氨基和一个羟基或巯基基团的芳香化合物在其邻位反应。通过本发明所得到的化合物是许多光亮剂的基础,并且在
染料、化妆品、制药和耐热纤维中有用。