1-Hydroxybenzotriazole → HCID 68328437, compound

Participants

Reaction Steps

To a solution of 5-(5-(5-(isopropylamino)-1,3,4-oxadiazol-2-yl)-1-tosyl-1H-indol-3-yl)nicotinic acid (500 mg, 0.967 mmol) in DMF (10 mL) was added PyBOP (755 mg, 1.45 mmol), HOBt (196 mg, 1.45 mmol) and DIPEA (0.50 mL, 2.9 mmol). Methylamine hydrochloride (77.7 mg, 1.160 mmol) was added and the reaction was stirred for 2 h under Ar at RT. The reaction was quenched with water (200 mL) to get a brown precipitate. The precipitate was filtered, washed with water (2×100 mL) and dried. The crude product was purified with basic alumina chromatography (eluting with EtOAc) to give 5-(5-(5-(isopropylamino)-1,3,4-oxadiazol-2-yl)-1-tosyl-1H-indol-3-yl)-N-methylnicotinamide (150 mg, 29%). MS (ESI, pos. ion) m/z: 531.2 (M+1).

Provenance & Evidence