S8-mediated decarboxylative cyclization of 2-nitrophenols with arylacetic acid: Synthesis of benzoxazoles

Add time:08/03/2019    Source:sciencedirect.com

A concise, metal-free protocol has been established for the preparation of 2-arylbenzoxazoles from 2-nitrophenols and arylacetic acids via a sulfur-mediated redox decarboxylative cyclization reaction. The reactions proceeded in moderate to good yields, and gram-scale is suitable.

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