Page 186 - 《精细化工)》2023年第10期
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第 40 卷第 10 期 精 细 化 工 Vol.40, No.10
2023 年 10 月 FINE CHEMICALS Oct. 2023
医药与日化原料
阿戈美拉汀合成工艺改进及千克级产品的制备
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羊志林 ,杨汉跃 ,闫显光 ,刘子镔 ,张珍明 ,王 昊
(1. 江苏海洋大学 药学院,江苏 连云港 222005;2. 江苏德源药业股份有限公司,江苏 连云港
222047;3. 江苏海洋大学 环境与化学工程学院,江苏 连云港 222005)
摘要:在庚酸和苄胺催化下,7-甲氧基-1-四氢萘酮(Ⅱ)与氰乙酸缩合得到了(7-甲氧基-3,4-二氢-1-萘基)
乙腈(Ⅲ);然后以 5% Pd/C(Pd 质量分数为 5%)为催化剂,丙烯酸烯丙酯(Ⅶ)为氢受体,化合物Ⅲ
经芳构化-还原“一锅煮”,先制备(7-甲氧基-1-萘基)乙腈(Ⅳ),不需分离直接加入甲酸铵为氢供体,制
备(7-甲氧基-1-萘基)乙胺(Ⅴ)。芳构化反应优化条件为:Pd/C 用量为 5.0%(以Ⅲ的质量计)、n(Ⅲ)∶
n(Ⅶ)=1.0∶1.1、回流反应时间 4.0 h。在上述反应条件下,Ⅲ的转化率为 100%,Ⅳ的选择性为 92.12%。在
n(Ⅲ)∶n(甲酸铵)=1∶4、反应温度 70 ℃、反应时间 2.0 h 的还原反应优化条件下, 中间体Ⅴ的收率为 83.47%。
最后,中间体Ⅴ与盐酸反应制得(7-甲氧基-1-萘基)乙胺盐酸盐(Ⅵ),Ⅵ与乙酰氯反应得到阿戈美拉汀(Ⅰ),
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反应总收率为 64.72%。并用 HNMR、 CNMR、MS、FTIR 对中间体及产物结构进行表征,该工艺经千克
级放大实验,反应总收率为 60.66%,产物纯度为 99.86%。
关键词:阿戈美拉汀;芳构化-还原“一锅煮”反应;工艺优化;千克级;医药原料
中图分类号:TQ460.6 文献标识码:A 文章编号:1003-5214 (2023) 10-2264-07
Improvement of agomelatine synthesis process and
preparation of kilogram-scale product
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YANG Zhilin , YANG Hanyue , YAN Xianguang , LIU Zibin ,
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ZHANG Zhenming , WANG Hao
(1. School of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, Jiangsu, China; 2. Jiangsu Deyuan
Pharmaceutical Co., Ltd., Lianyungang 222047, Jiangsu, China; 3. School of Environmental and Chemical Engineering,
Jiangsu Ocean University, Lianyungang 222005, Jiangsu, China)
Abstract: (7-Methoxy-3,4-dihydro-1-naphthyl)acetonitrile ( Ⅲ ) was prepared from condensation of
7-methoxytetralone (Ⅱ) and cyanoacetic acid under the catalysis of heptanoic acid and benzylamine, and
reacted with allyl acrylate (Ⅶ) via one-pot aromatization-reduction catalyzed by 5% Pd/C (Pd mass fraction
is 5%) to obtain (7-Methoxy-1-naphthyl)acetonitrile (Ⅳ). (7-Methoxy-1-naphthyl)ethylamine (Ⅴ) was then
synthesized by direct addition of ammonium formate as hydrogen donor into the pot without separation.
Under the optimum aromatization reaction conditions of Pd/C dosage (based on the mass of compound Ⅲ)
5.0%, n(Ⅲ)∶n(Ⅶ)=1.0∶1.1, and reaction time 4.0 h, the conversion rate of Ⅲ and the selectivity of Ⅳ
reached 100% and 92.12%, respectively. Under the optimal reduction reaction conditions of n(Ⅲ)∶
n(HCO 2NH 4)=1∶4, reaction temperature 70 ℃, and reaction time 2.0 h, the yield of intermediate Ⅴ was
83.47%. The reaction between intermediate Ⅴ with hydrochloric acid led to the production of
(7-Methoxy-1-naphthyl) ethylamine hydrochloride (Ⅵ). Finally, agomelatine (Ⅰ) with a total yield of
64.72% was obtained from the reaction of compound Ⅵ and acetyl chloride. The product and
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intermediates were characterized by HNMR, CNMR, MS and FTIR. This process was scaled up on a
收稿日期:2023-02-14; 定用日期:2023-04-11; DOI: 10.13550/j.jxhg.20230095
基金项目:国家自然科学基金青年基金项目(52103042);江苏省可见光催化材料工程研究中心开放课题项目(JECVCM202204);
连云港市“花果山英才计划”科技副总项目资助(2019.12);江苏省大学生创新创业项目(SY202111641637002)
作者简介:羊志林(1997—),男,硕士生,E-mail:1358571891@qq.com。联系人:张珍明(1964—),女,教授,E-mail:zhenming_zhang@
163.com。