3-[5,6-bis(methyloxy)-2-pyridinyl]-2,4-dioxo-1,2,3,4-tetrahydropyrido[4,3-d]pyrimidine-7-carboxylic acid 、
4-(三氟甲基)苄胺 在
N,N-二异丙基乙胺 、 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25%的产率得到3-[5,6-bis(methyloxy)-2-pyridinyl]-2,4-dioxo-N-{[4-(trifluoromethyl)phenyl]methyl}-1,2,3,4-tetrahydropyrido[4,3-d]pyrimidine-7-carboxamide