Diisopropylethylamine → HCID 16039604, compound

Participants

Reaction Steps

HATU (34 mg, 0.89 mmol) was added to 5-[(3-{[(1S)-1-methylpropyl]oxy}-5-{[(1-methyl-1H-pyrazol-3-yl)amino]carbonyl}phenyl)oxy]pyrazine-2-carboxylic acid (190 mg, 0.4 mmol) and azetidine hydrochloride (84 mg, 0.89 mmol) in DMF (5 mL). DIPEA (0.311 mL, 1.79 mmol) was added and the reaction was stirred for 16 hours. The reaction mixture was added to ethyl acetate (20 mL), washed with water (10 mL), 2N citric acid (10 mL), saturated aqueous sodium hydrogencarbonate (10 mL) and brine (10 mL), then dried (MgSO4), filtered and evaporated under reduced pressure to a gummy residue. The residue was purified by chromatography on silica, eluting with 50-100% ethyl acetate in hexane, to give a gum which was taken up in 50% ethyl acetate in ether and washed twice with water, brine (10 mL) then dried (MgSO4) to give the desired product as a foam (58 mg).

Provenance & Evidence