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Method of preparing 2-aryl benzoxazoles and 2-aryl benzothiazoles
Method of preparing 2-aryl benzoxazoles and 2-aryl benzothiazoles
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机译:制备2-芳基苯并恶唑和2-芳基苯并噻唑的方法
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摘要
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.
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