1: in toluene T=65°C; Schlenk techniqueInert atmosphere; 2: With bromine in toluene T=-78°C; 0.0333333 h; Schlenk techniqueInert atmosphere; 3: With water in toluene T=20°C; 1 h; Schlenk techniqueInert atmosphere; regioselective reaction;

oxygen; Titanium(IV) oxide in water 48 h; Irradiation;