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Photoinduced Palladium-Catalyzed Denitrogenative Cyclization of N-Aroyl Benzotriazoles to Phenanthridinones

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A photoinduced Pd-catalyzed denitrogenative cyclization of N-aroyl benzotriazoles was developed. Employing commercially available Pd2(dba)3/XantPhos as the catalyst and PhSiH3 as the additive, a series of N-aroyl benzotriazole derivatives was efficiently conve... ...