第 49 卷第 3 期Vol. 49 No. 3
2019 年 6 月Jun 2019

所属栏目:医药及中间体

1-苄基-6-溴吲哚-3-甲醛的合成
朱周静1,2,陈革豫1,2,李可新1,仝红娟1,2,刘 斌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6-溴吲哚(2)为原料,通过Vilsmeier-Haack反应、N-苄基保护,两步反应合成得到1-苄基-6-溴吲哚-3-甲醛(1)。对反应工艺进行了优化,确定合成6-溴-1H-吲哚-3-甲醛(3) 的反应温度为25℃,反应时间为5 h;合成1 的优化反应条件为:n(3)∶n(BnBr)=1.0∶1.3,n(3)∶n(KOH)=1.0∶1.5,反应温度25℃,反应时间3 h。在优化条件下,两步反应总收率86.5 %。产物结构经1H NMR和ESI-MS确证。
关键词:6-溴吲哚-3-甲醛;1-苄基-6-溴吲哚-3-甲醛;Vilsmeier-Haack反应
中图分类号:O626  文献标识码:A  文章编号:1009-9212(2019)03-0031-04
Synthesis of 1-Benzyl-6-bromo-1H-indole-3-carbaldehyde
ZHU Zhou-jing1,2, CHEN Ge-yu1,2,LI Ke-xin1, TONG Hong-juan1,2, LIU Bin1,2 (1. School of Pharmacy, Shaanxi Institute of International Trade & Commerce, Xi'an 712046, Shaanxi, China; 2. Collaborative Innovation Center of Green Manufacturing Technology for Traditional Chinese Medicine in Shaanxi Province, Xi'an 712046, Shaanxi, China)
Abstract:1-Benzyl-6-bromo-1H-indole-3-carbaldehyde (1) was synthesized from 6-bromo-1H-indole-3-carbaldehyde (2) through a two-step reaction in a total yield of 86.5%, This two-step reaction was involving Vilsmeier-Haack reaction and N-benzyl protected reaction. The reaction conditions were optimized as follows: in the Vilsmeier-Haack reaction, the reaction temperature was of 25℃ and reaction time was of 5 h; In the N-benzyl protected reaction, n(3)∶n(BnBr)=1.0∶1.3, n(3)∶n(KOH)=1.0∶1.5, the reaction temperature was of 25℃ and reaction time was of 3 h. The structure of the product was confirmed by 1H NMR and ESI-MS.
Key words:6-bromo-1H-indole-3-carbaldehyde; 1-benzyl-6-bromo-1H-indole-3-carbaldehyde; Vilsmeier-Haack reaction
基金项目:陕西国际商贸学院校级项目(SMXY201805)。
作者简介:朱周静(1982-),女,陕西西安人,硕士研究生,讲师,研究方向:药物合成及工艺研究(E-mail:46930121@qq.com)。
收稿日期:2019-03-13