1,3-dimethyl-5-[4-(methylsulfanyl)benzylidene]-2,4,6(1H,3H,5H)pyrimidinetrione 、 [1-(4-Methoxy-phenyl)-meth-(E)-ylidene]-(5-methyl-2-phenyl-2H-pyrazol-3-yl)-amine 以
N,N-二甲基甲酰胺 为溶剂,
反应 0.5h,
以60%的产率得到6-(4-methoxyphenyl)-1',3,3'-trimethyl-4-[4-(methylsulfanyl)phenyl]-1-phenyl-1,4,6,7-tetrahydro-2'H-spiro[pyrazolo[3,4-b]pyridine-5,5'-pyrimidine]-2',4',6'(1'H,3'H)-trione