5-(3-hydroxy-4-methoxyphenyl)-4,4-dimethyl-2-piperidin-4-yl-2,4-dihydro-3H-pyrazol-3-one hydrochloride   、                                                                                      
甲氧基苯甲酰氯                                                                                                                                                              在
                                                                                                                                                                                 
5-(3-hydroxy-4-methoxyphenyl)-2-{1-[(2-methoxyphenyl)carbonyl]piperidin-4-yl}-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-one   、                                                                                                  crude product   、                                                                                                  
乙酸乙酯   、                                                                                                  
乙醚                                                                                                                                  作用下,
                                                                                                                                                                                                                            以to yield 5-(3-hydroxy-4-methoxyphenyl)-2-{1-[(2-methoxyphenyl)carbonyl]piperidin-4-yl}-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-one as the product的产率得到5-(3-hydroxy-4-methoxyphenyl)-2-{1-[(2-methoxyphenyl)carbonyl]piperidin-4-yl}-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-one