A Pd-catalyzed cascade reaction of N-H insertion and oxidative dehydrogenative aromatization: a new entry to 2-amino-phenols

A palladium-catalyzed cascade reaction of N-H insertion (NHI) and oxidative dehydrogenative aromatization (ODA) has been developed, which affords a straightforward and efficient way to access the carbazole precursors (2-arylamino-phenols) as well as to prepare 2-alkylamino-phenols from non-aromatic substrates.