第 51 卷第 2 期Vol. 51 No. 2
2021 年 4 月Apr 2021

所属栏目:农药及中间体

呋喃磺草酮关键中间体的合成工艺研究
张小涵,王 宁,袁美娇,黄朋勉* (长沙理工大学 化学与食品工程学院,湖南 长沙 410000)
摘 要:以2-氯-4-甲硫基-3-甲基苯乙酮(3)为原料,在钨酸钠催化条件下,经过氧化氢氧化得到2-氯-4-甲磺酰基-3-甲基苯乙酮(2),优化条件下收率达98.31%。2 与次氯酸钠进行氯仿反应得到2-氯-4-甲磺酰基-3-甲基苯甲酸(1),优化条件下收率达95.25%。两步收率93.64%。化合物1、2、3均经氢谱确认结构。该制备方法清洁高效、收率较高、成本较低,工业化生产前景广阔。
关键词:2-氯-4-甲硫基-3-甲基苯乙酮;2-氯-4-甲磺酰基-3-甲基苯乙酮;2-氯-4-甲磺酰基-3-甲基苯甲酸
中图分类号:TQ463  文献标识码:A  文章编号:1009-9212(2021)02-0029-03
Synthesis of Key Intermediate of Furansulfoxanone
ZHANG Xiao-han, WANG Ning, YUAN Mei-jiao, HUANG Peng-mian* (Changsha University of Science and Technology, College of Chemical and Food Engineering, Changsha 410000, China)
Abstract:Using 2-chloro-4-methyl-3-methylacetophenone (3) as the raw material, 2-chloro-4-methosulfonyl-3-methylacetophenone(2) was synthesized by hydrogen peroxide catalyzed by sodium tungstate with a yield of 98.31% for 2-chloro-4-methylsulfonyl-3-methylacetophenone (2) under optimized conditions. Chloroform reaction of 2 with sodium hypochlorite was carried out to obtain 2-chloro-4-methosulfonyl-3-methylbenzoic acid (1), and the yield reached 95.25% under optimized conditions. The final total yield could reach up to 93.64%. Substances 1, 2 and 3 were characterized by 1H NMR. This preparation method was green and efficient with high yield and low cost, and has broad prospects for industrial production.
Key words:2-chloro-4-methyl-3-methylacetophenone; 2-chloro-4-methosulfonyl-3-methylacetophenone; 2-chloro-4-methosulfonyl-3-ethylbenzoic acid
基金项目:湖南省教育厅科学研究项目(20A019)。
作者简介:张小涵(2000—),女,湖南常德人,研究方向:有机合成(E-mail:2665913677@qq.com)。
联 系 人:黄朋勉,副教授,研究方向:有机合成(E-mail:280897806@qq.com)。
收稿日期:2021-04-02