Phosphorus oxychloride → HCID 89996089, compound

Participants

Reaction Steps

A solution of 5-methyl-2-(methylthio)pyrido[3,4-d]pyrimidin-8(7H)-one (Preparation 186, 48 mg, 0.232 mmol) in POCl3 (1.5 mL) was heated to 70° C. for 2 hours. The reaction was concentrated in vacuo and partitioned between EtOAc and saturated aqueous NaHCO3. The aqueous layer was extracted with EtOAc and the combined organic layers were washed with water and brine, dried and adsorbed on silica. The residue was purified by silica gel column chromatography eluting with 0 to 15% EtOAc in cyclohexanes to give the title compound (27 mg, 52%).

Provenance & Evidence