(S)-tert-butyl 4-(6-(6-chloroimidazo[1,2-b]pyridazin-8-ylamino)pyridin-3-yl)-3-methylpiperazine-1-carboxylate                                                                                                                                                              在
                                                                                                                                                                                 
氢溴酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
溶剂黄146                                                                                  为溶剂,
                                                                                                                                                    反应 18.0h,
                                                                                                                以65%的产率得到(S)-6-bromo-N-(5-(2-methylpiperazin-1-yl)pyridin-2-yl)imidazo[1,2-b]pyridazin-8-amine hydrobromide