Acetic Anhydride → HCID 24805099, compound

Participants

Reaction Steps

To a solution of 5-amino-1-benzyl-2-methyl-1H-indole-3-carboxylic acid, 3,4-difluorobenzylamide (Compound 46, 50 mg, 0.12 mmol) in pyridine (3 ml) was added acetic anhydride (120 μl, 1.23 mmol). The reaction was stirred at room temperature for 72 h, diluted with EtOAc, washed successively with 1M HCl, H2O, brine, dried over Na2SO4, and concentrated under reduced pressure. The residue was crystallized from CH2Cl2-Et2O to yield 5-acetamido-1-benzyl-2-methyl-1H-indole-3-carboxylic acid, 3,4-difluorobenzylamide (Compound 47) as a white solid (37 mg, 68%).

Provenance & Evidence