Boron tribromide → HCID 135418181, compound

Participants

Reaction Steps

4-Carboxy-6-methoxy-2-(4-methoxy-phenyl)-benzothiazole (50 mg, 0.159 mmol) was treated with boron tribromide under standard condition to give 4-carboxy-6-hydroxy-2-(4-hydroxy-phenyl)-benzothiazole (34 mg, 74% yield) as a yellow solid. Mass spec: MH+=288. 1H NMR (DMSO-d6): 10.24 (s, 1H), 10.16 (s, 1H), 7.91 (d, 2H), 7.67 (s, 1H), 7.48 (s, 1H), 6.95 (d, 2H).

Provenance & Evidence