4-(2-(Diethylamino)ethoxy)aniline → HCID 22125170, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 100 mg (0.31 mmol) of 3-phenyl-7-methanesulfonyl-3,4-dihydro-1-methylpyrimido[4,5-d]pyrimidin-2(1H)-one and 300 mg (1.4 mmol) of 4-[2-(diethylamino)ethoxy]aniline was heated at 170-180° C. for 10 minutes and then cooled. The residue was chromatographed on silica gel using dichloromethane/methanol/acetic acid/water (240:24:3:2) for the elution. Product-containing fractions were combined and evaporated. The residue was evaporated with toluene and then dissolved in 40 ml of dichloromethane. The solution was washed with 40 ml of saturated sodium bicarbonate solution, dried over magnesium sulfate, filtered and evaporated. The residual solid was purified by crystallisation from cyclohexane/ethyl acetate to give 14 mg (10%) of 3-phenyl-7-[4-[2-(diethylamino)ethoxy]anilino]-3,4-dihydro-1-methylpyrimido[4,5-d]pyrimidin-2(1H)-one as a white solid of melting point 141-144° C.

Provenance & Evidence