1-butyl-4-methyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile 、
1,1,3,3-四甲氧基丙烷 在
potassium acetate 作用下,
以
正丁醇 为溶剂,
反应 4.5h,
以98%的产率得到potassium 1-butyl-3-(3-(1-butyl-5-cyano-4-methyl-2,6-dioxo-1,6-dihydropyridin-3(2H)-ylidene)prop-1-en-1-yl)-5-cyano-4-methyl-6-oxo-1,6-dihydropyridin-2-olate