有机化学 ›› 2019, Vol. 39 ›› Issue (1): 144-150.DOI: 10.6023/cjoc201810022 上一篇    下一篇

所属专题: 庆祝陈庆云院士九十华诞

研究论文

α-三氟甲基苄溴合成烷基硫酸盐——脱卤亚磺化反应的延伸

付晓林a, 孙岩b, 赵志刚a, 郭勇b, 陈庆云b, 念保义c   

  1. a 西南民族大学化学与环境保护工程学院 成都 610041;
    b 中国科学院上海有机化学研究所 上海 200032;
    c 三明学院三明氟化工产业技术研究院 三明 365004
  • 收稿日期:2018-10-18 修回日期:2018-11-24 发布日期:2018-11-30
  • 通讯作者: 孙岩, 赵志刚 E-mail:sunyan@sioc.ac.cn;zzg63129@163.com
  • 基金资助:

    国家自然科学基金(Nos.21737004,21672239,21421002)和三明市氟化工产业技术研究院(Nos.FCIT201704GR,FCIT201705GR,FCIT201701BR)资助项目.

Synthesis of Alkyl Sulfate from α-Trifluoromethylbenzylbromide—An Extension of Sulfinatodehalogenation

Fu Xiaolina, Sun Yanb, Zhao Zhiganga, Guo Yongb, Chen Qingyunb, Nian Baoyic   

  1. a College of Chemistry & Environment Protection Engineering, Southwest Minzu University, Chengdu 610041;
    b College of Chemistry & Environment Protection Engineering, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032;
    c Sanming Institute of Fluorochemical Industry, Sanming University, Sanming 365004
  • Received:2018-10-18 Revised:2018-11-24 Published:2018-11-30
  • Contact: 10.6023/cjoc201810022 E-mail:sunyan@sioc.ac.cn;zzg63129@163.com
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 21737004, 21672239, 21421002) and the Sanming Institute of Fluorochemical Industry (Nos. FCIT201704GR, FCIT201705GR, FCIT201701BR).

脱卤亚磺化反应是引入氟烷基基团的一种常用方法.探索了α-三氟甲基苄溴在脱卤亚磺化条件下的反应,发现产物并不是亚磺酸盐[ArCH(CF3)SO2Na],而是烷基硫酸盐[ArCH(CF3)OSO3Na].即使在烯烃的存在的条件下,α-三氟甲基苄溴在脱卤亚磺化条件下产生了自由基,也不与烯烃发生加成反应,而是直接生成亚磺酸盐,亚磺酸盐被空气氧化成烷基硫酸盐.

关键词: 三氟甲基, 自由基, 脱卤亚磺化, 烷基硫酸盐

The sulfinatodehalogenation reaction is a common method of introducing a fluoroalkyl group. In this paper, the reaction of α-trifluoromethylbenzyl bromide under sulfinatodehalogenation conditions was investigated. It was found that the product was an sodium alkyl sulfate (ArCH(CF3)OSO3Na) instead of an sodium alkyl sulfinate (ArCH(CF3)SO2Na) which was normal produced. α-Trifluoromethylbenzyl bromide did not react with the olefin after its generation of a radical intermediate under sulfinatodehalogenation conditions even though an olefin was presented. Instead, the reaction directly gave an alkyl sulfinate, and then oxidized by air to provide a product as an alkyl sulfate.

Key words: Trifiluoromethyl, free radical, sulfinatodehalogenation, alkyl sulfate