piperidine-2,4-dione 4-[(2-chloropyridin-4-yl)hydrazone] 、
N,N-二甲基甲酰胺二甲基缩醛 在
乙醇乙醚 作用下,
反应 1.0h,
以to give 2-(2-chloropyridin-4-yl)-2,5,6,7-tetrahydro-4H-pyrazolo[4,3-c]pyridin-4-one as an off-white solid (378 mg, 1.52 mmol, 42% yield)的产率得到2-(2-chloropyridin-4-yl)-2,5,6,7-tetrahydro-4H-pyrazolo[4,3-c]pyridin-4-one