1,3-二甲基巴比妥酸 、
4-methoxy-6,6-dimethyl-5,6,7,8-tetrahydro-[1,3]dioxolo[4,5-g]isoquinolin-6-ium-5-olate 在
三乙胺 作用下,
以
N,N-二甲基乙酰胺 为溶剂,
以26%的产率得到5-(4-methoxy-6,6-dimethyl-5,6,7,8-tetrahydro-[1,3]dioxolo[4,5-g]isoquinolin-6-ium-5-yl)-1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-olate