节点文献
3-甲基噻吩自由基溴化反应研究
Investigation on radical bromination of 3-Methylthiophene
【摘要】 研究了以3-甲基噻吩、NBS为原料的光引发及化学引发自由基溴化反应,发现光引发方法在低于25℃时只生成3-甲基-2-溴噻吩.L9(34)正交实验表明,化学引发方法在70℃、反应时间为3 h、3-甲基噻吩和NBS的摩尔比为0.9∶1时,3-溴甲基噻吩选择性最高,为52.4%.
【Abstract】 Radical bromination of 3-methylthiophene with NBS by photoinition and AIBN inition has been investigated.It shows that when reaction temperature is less than 25 ℃ only 3-methyl-2-bromothiophene is synthesized by photoinition.Orthogonal experiment shows that when initiator is AIBN and reaction temperature is 70 ℃,reaction time is 3h,the ratio of 3-methylthiophene to NBS is 0.9∶ 1,the selectivity of 3-bromomethylthiophene is 52.4%.
【关键词】 3-甲基噻吩;
3-溴甲基噻吩;
自由基溴化;
2-溴-3-甲基噻吩;
【Key words】 3-methylthiophene; 3-bromomethylthiophene; 3-methyl-2-bromothiophene; radical bromination;
【Key words】 3-methylthiophene; 3-bromomethylthiophene; 3-methyl-2-bromothiophene; radical bromination;
- 【文献出处】 天津理工大学学报 ,Journal of Tianjin University of Technology , 编辑部邮箱 ,2011年03期
- 【分类号】O621.25
- 【被引频次】3
- 【下载频次】365