3-[5,6-bis(methyloxy)-2-pyridinyl]-2,4-dioxo-1,2,3,4-tetrahydropyrido[4,3-d]pyrimidine-7-carboxylic acid 、
1-(4-氯苯基)乙胺 在
三乙胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以30%的产率得到3-[5,6-bis(methyloxy)-2-pyridinyl]-N-[1-(4-chlorophenyl)ethyl]-2,4-dioxo-1,2,3,4-tetrahydropyrido[4,3-d]pyrimidine-7-carboxamide