2-amino-8-(2-fluoropyridin-5-yl)-7-methoxy-6-[2-methyl-5-N-(3-trifluoromethylphenyl)carbamoylphenyl]quinazoline   、                                                                                      
4,4-二氟哌啶盐酸盐                                                                                                                                                              在
                                                                                                                                                                                 
N,N-二异丙基乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N-甲基吡咯烷酮                                                                                  为溶剂,
                                                                                                                                                    反应 5.0h,
                                                                                                                以43%的产率得到2-amino-8-[2-(4,4-difluoropiperidin-1-yl)pyridin-5-yl]-7-hydroxy-6-[2-methyl-5-N-(3-trifluoromethylphenyl)carbamoylphenyl]quinazoline