1-(4-methoxyphenyl)-2-(tetrahydropyrimidin-2(1H)-ylidene)ethan-1-one 、
2-(3-oxoisobenzofuran-1(3H)-ylidene)malononitrile 以
N,N-二甲基甲酰胺 为溶剂,
以96%的产率得到6'-amino-9'-(p-methoxybenzoyl)-3-oxo-1',2',3',4'-tetrahydro-3H-spiro[isobenzofuran-1,8'-pyrido[1, 2-a]pyrimidine]-7'-carbonitrile