5-chloro-N-(5-chloropyridin-2-yl)-2-(piperidin-4-ylmethyl)aminobenzamide   、                                                                                      5-chloro-N-(5-chloropyridin-2-yl)-2-(1-isopropylpiperidin-4-ylmethylamino)benzamide                                                                                                                                                              在
                                                                                                                                                                                 
甲醇   、                                                                                                  crude residue   、                                                                                                  silica gel   、                                                                                                  
乙酸乙酯   、                                                                                                  
二氯甲烷                                                                                                                                  作用下,
                                                                                                                                                                                                                            以ethyl acetate-2 N ammonia in methanol (95:5), then dichloromethane-2 N ammonia in methanol (90:10) provided the title compound (0.375 g, 54%) as a solid material的产率得到5-chloro-N-(5-chloropyridin-2-yl)-2-(1-isopropylpiperidin-4-ylmethylamino)benzamide