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