Triphenylphosphine → (S)-2-methyl-7-morpholin-4-yl-1-[2-(4-morpholin-4-yl-phenyl)ethyl]-2-trifluoromethyl-2,3-dihydro-1H-imidazo[1,2-a]pyrimidin-5-one

Participants

Reaction Steps

135 mg of 2-(4-morpholinophenyl)ethanol and 223 mg of polymer-supported triphenylphosphine (3 mmol/g) are added to a solution of 100 mg of (S)-2-methyl-7-morpholin-4-yl-2-trifluoromethyl-2,3-dihydro-1H-imidazo[1,2-a]-pyrimidin-5-one (Example 1j) in 5 ml of tetrahydrofuran. After stirring for five minutes at ambient temperature, 0.12 ml of diethyl azodicarboxylate is added. The resulting reaction mixture is then stirred overnight at ambient temperature. After filtration, the filtrate is evaporated under reduced pressure. The residue obtained is purified by silica column chromatography (eluent: dichloromethane/methanol 97/03), so as to give 40 mg of (S)-2-methyl-7-morpholin-4-yl-1-[2-(4-morpholin-4-yl-phenyl)ethyl]-2-trifluoromethyl-2,3-dihydro-1H-imidazo[1,2-a]pyrimidin-5-one, the characteristics of which are the following:

Provenance & Evidence