5,6-dimethoxy-1-(4-nitrophenyl)-indoline   、                                                                                      
氢气   、                                                                                      
盐酸                                                                                                                                                              在
                                                                                                                                         
钯                                                                                                                                                                                                                               碳                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
water ethanol                                                                                  为溶剂,
                                                                                                                                                    反应 16.0h,
                                                                                                                以The product 4-(5,6-dimethoxyindolinyl)-phenylamine hydrochloride was obtained in a yield of 84.9% (melting point: 143-145° C.)的产率得到4-(5,6-Dimethoxyindolinyl)-phenylamine hydrochloride