Diisopropylethylamine → HCID 90052274, compound

Participants

Reaction Steps

To (S)—N-(3-((2-((3-fluorophenyl)amino)-4-(propylamino)pyrimidin-5-yl)ethynyl)phenyl)-2-(methylamino)propanamide (G3, 67 mg), 4-dimethylaminocrotonic acid hydrochloride (50 mg) and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (58 mg), N,N-dimethylformamide (1.5 mL) and N,N-diisopropylethylamine (105 μL) were added at room temperature, and the mixture was stirred at the same temperature for 13 hours. To the reaction mixture, saturated aqueous sodium hydrogencarbonate and ethyl acetate were added. The organic layer was separated, washed successively with saturated aqueous sodium hydrogencarbonate and saturated aqueous sodium chloride, and then dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. The obtained residue was purified by basic silica gel column chromatography (eluent, 100 to 94% ethyl acetate in methanol). The obtained solid matter was washed with water, and then dried under reduced pressure to obtain (S,E)-4-(dimethylamino)-N-(1-((3-((2-((3-fluorophenyl)amino)-4-(propylamino)pyrimidin-5-yl)ethynyl)phenyl)amino)-1-oxopropan-2-yl)-N-methyl-2-butenamide (8-1, 50 mg).

Provenance & Evidence