7-(6-bromopyridin-3-yl)-2-(pyridin-4-yl)pyrazolo[1,5-a]pyrimidine   、                                                                                      
(1S,4S)-2,5-二氮双环[2.2.1]庚烷二氢溴酸盐                                                                                                                                                              在
                                                                                                                                                                                 silica gel                                                                                                                                  作用下,
                                                                                                                                                                                                                            以to give 7-(6-((1S,4S)-2,5-diazabicyclo[2.2.1]heptan-2-yl)pyridin-3-yl)-2-(pyridin-4-yl)pyrazolo[1,5-a]pyrimidine的产率得到7-(6-((1S,4S)-2,5-diazabicyclo[2.2.1]heptan-2-yl)pyridin-3-yl)-2-(pyridin-4-yl)pyrazolo[1,5-a]pyrimidine