ethyl 3-[(3-oxo-6-pyridin-4-yl-2,3-dihydropyridazine-4-carbonyl)amino]propionate 、 6-[4-(Benzyloxy)phenyl]-3-oxo-2,3,4,5-tetrahydropyridazine-4-carboxylic acid 、
1-羟基苯并三唑 、
2,4-二氯苯甲胺 、
N,N-二异丙基乙胺 、
O-(7-azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate 、 以
N,N-二甲基甲酰胺 为溶剂,
以1.02 g of N-(2,4-dichlorobenzyl)-3-oxo-6-[4-(benzyloxy)phenyl]-2,3-dihydropyridazine-4-carboxamide were obtained in the form of a yellow solid melting at 225° C.的产率得到N-(2,4-dichlorobenzyl)-6-[4-(benzyloxy)phenyl]-3-oxo-2,3-dihydropyridazine-4-carboxamide