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An efficient and easily managed protocol was developed for the synthesis of 2-aryl-substituted benzoxazoles by using a copper-catalyzed C-H arylation reaction between benzoxazole derivatives and insitu generated aryl diazonium salts. Under the optimized conditions, a wide variety of products were selectively obtained in moderate to good yields. Diphenylamine and 2,3-bipyridine were also obtained under the same reaction conditions by employing aniline and pyridin-3-amine, respectively, as the sole starting material.
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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem