1-Hydroxybenzotriazole → HCID 57860106, compound

Participants

Reaction Steps

To a solution of the compound of Example 77 (200 mg, 0.423 mmol), (methylsulfonyl)acetic acid (76.0 mg, 0.550 mmol) and HOBt (85.8 mg, 0.635 mmol) in DMF (4 mL) was added WSCD (122 mg, 0.635 mmol) under ice-cooling, and the mixture was stirred at room temperature for 15 hr. The reaction mixture was diluted with saturated aqueous sodium hydrogen carbonate solution, and extracted twice with ethyl acetate. The extract was combined, washed with saturated brine, dried over magnesium sulfate, and concentrated under reduced pressure. The residue was purified by aminosilica gel chromatography (eluate; ethyl acetate). Recrystallization of the obtained solid from ethyl acetate gave the title compound (60.3 mg, 24%) as white crystals.

Provenance & Evidence