反应详情

A solution of 7-(propan-2-yloxy)-3,4-dihydro-2,6-naphthyridin-1(2H)-one (112d, 75 mg, 0.36 mmol)) and NCS (498 mg, 3.64 mmol) in AcOH (3 mL) was heated at 100° C. for 4.5 hours. The reaction mixture was cooled to room temperature, AcOH was removed under vacuum and the residue was purified by column chromatography (0-80% ethyl acetate/heptanes) to give 8-chloro-7-(propan-2-yloxy)-3,4-dihydro-2,6-naphthyridin-1(2H)-one (112e, 60 mg, 68%) as a white solid.

1. customAcOH was removed under vacuum
2. customthe residue was purified by column chromatography (0-80% ethyl acetate/heptanes)