5-(3-hydroxy-4-methoxyphenyl)-4,4-dimethyl-2-piperidin-4-yl-2,4-dihydro-3H-pyrazol-3-one hydrochloride 、
2,6-二甲氧基苯甲酰氯 在
2-{1-[(2,6-dimethoxyphenyl)carbonyl]piperidin-4-yl}-5-(3-hydroxy-4-methoxyphenyl)-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-one 、 crude product 、
乙酸乙酯 、
乙醚 作用下,
以to yield 2-{1-[(2,6-dimethoxyphenyl)carbonyl]piperidin-4-yl}-5-(3-hydroxy-4-methoxyphenyl)-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-one as the product的产率得到2-{1-[(2,6-dimethoxyphenyl)carbonyl]piperidin-4-yl}-5-(3-hydroxy-4-methoxyphenyl)-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-one