3-bromo-2-(2-cyclopropylethyl)-4H-pyrido[1,2-a]pyrimidin-4-one 、
3-bromo-2-butyl-4H-pyrido[1,2-a]pyrimidin-4-one 、
4-氯苯硼酸 、
4-甲氧基苯硼酸 以3-(4-chlorophenyl)-2-(2-cyclopropylethyl)-4H-pyrido[1,2-a]pyrimidin-4-one was obtained (73%) as a colourless solid的产率得到3-(4-chlorophenyl)-2-(2-cyclopropylethyl)-4H-pyrido[1,2-a]pyrimidin-4-one