3,7-dimethyl-6-(2-naphthyl)-4-oxo-4,5-dihydropyrazolo[1,5-a]pyrazine-2-carboxylic acid 、
2-(3-cyclopropyl-1H-pyrazol-1-yl)ethan-1-amine 在
N-甲基吗啉 、
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N-[2-(3-cyclopropyl-1H-pyrazol-1-yl)ethyl]-3,7-dimethyl-6-(naphthalen-2-yl)-4-oxo-4,5-dihydropyrazolo[1,5-a]pyrazine-2-carboxamide