6-tert-butyl-8-fluoro-2-[4-(2-methoxypyridin-4-yl)benzyl]-2H-phthalazin-1-one 、
三溴化磷 以to give 6-tert-butyl-8-fluoro-2-[4-(2-oxo-1,2-dihydro-pyridin-4-yl)-benzyl]-2H-phthalazin-1-one (50 mg, 52%) as a white solid的产率得到6-tert-butyl-8-fluoro-2-[4-(2-oxo-1,2-dihydropyridin-4-yl)benzyl]-2H-phthalazin-1-one