Sodium Bicarbonate → (S,E)-2-((4-cyanophenyl)amino)-N-(3-(2-(4-(dimethylamino)-N-methyl-2-butenamido)propanamido)phenyl)-4-(propylamino)pyrimidine-5-carboxamide

Participants

Reaction Steps

To a solution of (S)-2-((4-cyanophenyl)amino)-N-(3-(2-(methylamino)propanamido)phenyl)-4-(propylamino)pyrimidine-5-carboxamide (E1) dihydrochloride (58 mg), 4-dimethylaminocrotonic acid hydrochloride (33 mg) and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (38 mg) in N,N-dimethylformamide (1 mL), N,N-diisopropylethylamine (174 μL) was added at room temperature, and the mixture was stirred at the same temperature for 15 hours. To the reaction mixture, saturated aqueous sodium hydrogencarbonate was added. The solid matter was taken by filtration, washed with water, and then dried under reduced pressure. The obtained solid matter was purified by basic silica gel column chromatography (eluent, 98 to 88% ethyl acetate in methanol) to obtain (S,E)-2-((4-cyanophenyl)amino)-N-(3-(2-(4-(dimethylamino)-N-methyl-2-butenamido)propanamido)phenyl)-4-(propylamino)pyrimidine-5-carboxamide (6-1, 41 mg) as white solid.

Provenance & Evidence