The rhodium(III)-catalyzed tunable oxidative cyclization of readily available N-tosylacrylamides and diazo compounds is presented, which offers a novel method for the selective construction of fully substituted α-pyrones and furans in a regiospecific manner by employing the acylsulfonamide group as a versatile in situ removable directing group.
J. Wu, D. Wang, Y. Wan and C. Ma, Chem. Commun., 2016, 52, 1661 DOI: 10.1039/C5CC09137C
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