4-oxo-7-(pyrid-4-yl)-5-(2,2,2-trifluoroethyl)-2-{[2-(trimethylsilyl)ethoxy]methyl}-4,5-dihydro-2H-pyrazolo[4,3-c]quinoline-8-carbonitrile 、 4-oxo-7-(pyrid-4-yl)-5-(2,2,2-trifluoroethyl)-1-{[2-(trimethylsilyl)ethoxy]-methyl}-4,5-dihydro-2H-pyrazolo[4,3-c]quinoline-8-carbonitrile 在
盐酸 、
溶剂黄146 作用下,
反应 1.33h,
以93%的产率得到4-oxo-7-(pyrid-4-yl)-5-(2,2,2-trifluoroethyl)-4,5-dihydro-2H-pyrazolo[4,3-c]quinoline-8-carboxylic acid hydrochloride