Indoline hemiaminals: a platform for accessing anthranilic acid derivatives through oxidative deformylation

2-Aminobenzoyl chlorides possess both a nucleophilic nitrogen atom and an electrophilic carbonyl group, and thus selective acylation of nucleophiles is challenging; self-dimerization and sluggish reactions occur. Herein, we introduce a new synthetic protocol using 2-aminobenzoyl surrogates, allowing concise entry to decorated 2-aminobenzoyl derivatives in the absence of transition metals, acid chlorides, and specific reagents.