第 48 卷第 6 期 | | Vol. 48 No. 6 | 2018 年 12 月 | Dec 2018 |
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所属栏目:医药及中间体
N-(2,6-二氯-4-氰基苯基)-2-甲氧基烟酰胺合成研究 |
刘 斌1,2,徐小娜1,仝红娟1,唐文强1,朱周静1,2
(1. 陕西国际商贸学院 医药学院,陕西 西安 712046;2. 陕西省中药绿色制造技术协同创新中心,陕西西安 712046) |
摘 要:以2-氟烟酸为原料,通过酯化、氨解反应、SNAr反应,3步合成N-(2,6-二氯-4-氰基苯基)-2-甲氧基烟酰胺,总收率52.5%。其中间体及目标化合物结构经1H NMR、13C NMR和ESI-MS确证。并对合成目标化合物的反应条件进行研究,优化反应条件为:物料比n(2-氟烟酸甲酯)∶n(4-氨基-3,5-二氯苯腈)=1.0∶1.1,n(2-氟烟酸甲酯)∶n(六甲基二硅基氨基锂化合物)=1.0∶1.4;回流反应14 h,在优化条件下目标化合物收率为56.8 %。 |
关键词:烟酰胺;2-甲氧基烟酰胺;合成 |
中图分类号:TQ463 文献标识码:A 文章编号:1009-9212(2018)06-0023-04 |
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N-(2,6-Dichloro-4-cyanophenyl)-2-methoxynicotinamide |
LIU Bin1,2, XU Xiao-na1, TONG Hong-juan1, TANG Wen-qiang2, ZHU Zhou-jing1,2
(1. School of Pharmacy, Shaanxi Institute of International Trade & Commerce, Xi'an 712046, China; 2. Collaborative Innovation Center of Green Manufacturing Technology for Traditional Chinese Medicine in Shaanxi Province, Xi'an 712046, China) |
Abstract:N-(2,6-Dichloro-4-cyanophenyl)-2-methoxynicotinamide was synthesized from 2-fluoronicotinic acid through a 3-step reaction in a total yield of 52.5%, involving esterification, ammonolysis, SNAr reaction. The structure of intermediates and the product were confirmed by 1H NMR, 13C NMR and ESI-MS. The optimal reaction conditions of key step(the synthesis of target compound) were also investigated. The reaction of compound 3 and 4 with the mole ratio of n(3)∶n(4)=1.0∶1.1, n(3)∶n(LiHMDS)=1.0∶1.4, target compoundwas obtained in a yield of 56.8% with reflux for 14 h. |
Key words:nicotinamide; 2-methoxynicotinamide; synthesis |
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基金项目:陕西省教育厅2018年度专项科学研究计划(18JK0954),陕西国际商贸学院校级项目(SMXY201805)
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作者简介:刘 斌(1982-),男,陕西渭南人,讲师,博士,研究方向:药物分子设计合成(E-mail:lb125lb@163.com)。
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收稿日期:2018-12-12
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