2-dimethylaminomethylene-5,5-dimethylcyclohexane-1,3-dione 、
2-amino-5-cyano-4,6-diphenyl-4H-pyran-3-carboxylic acid 在
吡啶 作用下,
以69 %的产率得到N-(5-cyano-2-phenyl-6-(p-tolyl)pyrimidine-4-yl)-2-(6-cyano-4-oxo-5,7-diphenyl-3,5-dihydro-4H-pyrano[2,3-d]pyrimidin-2-yl)acetamide