(2-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-3-yl)-acetaldehyde 、
6-氟-3-(哌啶-4-基)苯并[D]异恶唑 以
甲苯 为溶剂,
反应 3.0h,
以to give 5.70 g (97.3%) of 3-{2-[4-(6-fluorobenzo[d]isoxazol-3-yl)-piperidin-1-yl]-vinyl}-2-methyl-6,7,8,9-tetrahydro-pyrido[1,2-a]pyrimidin-4-one (III) as a deep orange solid的产率得到3-{2-[4-(6-fluorobenzo[d]isoxazol-3-yl)-piperidin-1-yl]-vinyl}-2-methyl-6,7,8,9-tetrahydro-pyrido[1,2-a]pyrimidin-4-one