(2RS,3SR)-4-dimethylamino-2-(3-methoxy-phenyl)-3-methyl-butan-2-ol hydrochloride   、                                                                                      Sodium hydroxide methylene chloride   、                                                                                         、                                                                                      
diisobutylaluminum hydride                                                                                                                                                              在
                                                                                                                                                                                 
二氯甲烷                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醚                                                                                  为溶剂,
                                                                                                                                                                                        以In this manner, 18.5 g (71% theoretical) of hydrochloride (22) were obtained with a melting point of 183°-184° C.的产率得到(1RS,2SR)-3-(3-dimethylamino-1-hydroxy-1,2-dimethyl-propyl)-phenol hydrochloride