Phthalimide → 2-((3-(3-fluorophenyl)-6-methyl-4-oxo-4H-pyrido-[1,2-a]pyrimidin-2-yl)methyl)isoindoline-1,3-dione

Participants

Reaction Steps

To a solution of 3-(3-fluorophenyl)-2-(hydroxymethyl)-6-methyl-4H-pyrido[1,2-a]pyrimidin-4-one (0.05110 g, 0.180 mmol) in THF (3.00 mL) was added triphenylphosphine (0.141 g, 0.539 mmol), phthalimide (0.0793 g, 0.539 mmol), and diisopropyl azodicarboxylate (0.106 mL, 0.539 mmol). The reaction mixture was stirred at rt. After 3 h, the mixture was concd under reduced pressure and partitioned between EtOAc (100 mL) and brine (100 mL). The organic layer was dried over Na2SO4, filtered, and concd under reduced pressure. The residue was purified by silica gel column chromatography on a 40 g Redi-Sep™ column using 0 to 50% gradient of EtOAc in hexane over 14 min and 50% isocratic of EtOAc for 15 min as eluent to give 2-((3-(3-fluorophenyl)-6-methyl-4-oxo-4H-pyrido-[1,2-a]pyrimidin-2-yl)methyl)isoindoline-1,3-dione as a solid: Mass Spectrum (ESI) m/e=414.1 (M+1).

Provenance & Evidence