Direct Sulfonamidation of Primary and Secondary Benzylic Alcohols Catalyzed by a Boronic Acid/Oxalic Acid System

The direct sulfonamidation of primary and secondary benzylic aclohols catalyzed by a 1,2,3,4-tetrafluorophenylboronic acid/oxalic acid co-catalytic system has been examined. The reaction proceeds in mild conditions with readily available starting materials and has been shown to be gram-scalable without significant decrease of yield. Both primary and secondary benzylic alcohols were evaluated and afforded the desired sulfonamide products with good to excellent yields

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