2-(3-piperidinopropyl)-4-phenyl-1(2H)-isoquinolone 、
顺丁烯二酸 在
乙醚 、 petroleum ether 作用下,
以
乙酸乙酯 为溶剂,
以to obtain 12.2 g of 2-(3-piperidinopropyl)-4-phenyl-1(2H)-isoquinolone maleate having a melting point of 160.5° C. as colorless prisms的产率得到2-(3-piperidinopropyl)-4-phenyl-1(2H)-isoquinolone maleate