HCID 22125024, compound → HCID 22125082, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 0.5 g (1.1 mmol) of 3-(2,6-dichlorophenyl)-7-methylthio-3,4-dihydro-1-(3-(2-chloroethyl)phenyl)pyrimido[4,5-d]pyrimidin-2(1H)-one in 30 ml of dimethylformamide was treated with 0.2 g (1.1 mmol) of phthalimide potassium salt and the mixture was heated at 80° C. for 2 hours. The cooled mixture was evaporated and partitioned between 40 ml of dichloromethane and 40 ml of water. The organic phase was dried over magnesium sulfate, filtered and evaporated. The residue was subjected to column chromatography on silica gel using diethyl ether/hexane (1:1) for the elution. Product-containing fractions were combined and evaporated to give 0.43 g (70%) of 3-(2,6-dichlorophenyl)-7-methylthio-3,4-dihydro-1-[3-(2-phthalimidoethyl)phenyl]pyrimido[4,5-d]pyrimidin-2(1H)-one as a white solid. [Mass spectrum (ESI) MH+ =590].

Provenance & Evidence