Construction of Benzimidazoles and Benzoxazoles through the Molybdenum‐Mediated Carbonylation of Aryl Halides

The facile and efficient one-pot construction of benzimidazoles and benzoxazoles through the Mo(CO)6-mediated carbonylation of aryl halides was examined. In the process, Mo(CO)6 acted as a convenient and safe solid source of carbon monoxide. A wide range of substrates were tolerated to provide the corresponding products in fair to good yields without the need of gaseous CO or palladium catalysts.

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