高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (12): 2563.doi: 10.7503/cjcu20140400

• 有机化学 • 上一篇    下一篇

铁(Ⅲ)催化氯代炔烃水化反应合成α-氯代甲基酮类化合物

易卫国, 鄢东, 吴超, 兰立新()   

  1. 湖南化工职业技术学院制药与生物工程系, 株洲 412004
  • 收稿日期:2014-04-25 出版日期:2014-12-10 发布日期:2014-11-29
  • 作者简介:联系人简介: 兰立新, 男, 副教授, 主要从事金属催化及在生物领域的应用研究. E-mail:hnllx@126.com
  • 基金资助:
    湖南省科技厅基金(批准号: 2012FJ3039)和湖南省教育厅科学研究项目(批准号: 13C236)资助

Synthesis of α-Chloromethyl Ketones by Iron-catalyzed Hydration Reaction of Alkynyl Chlorides

YI Weiguo, YAN Dong, WU Chao, LAN Lixin*()   

  1. Department of Pharmaceutical and Biological Engineering,Hunan Chemical Vocational Technology College, Zhuzhou 412004, China
  • Received:2014-04-25 Online:2014-12-10 Published:2014-11-29
  • Contact: LAN Lixin E-mail:hnllx@126.com
  • Supported by:
    † Supported by the Department of Science and Technology Foundation of Hunan Province, China(No.2012FJ3039) and the Scientific Research Fund of Hunan Provincial Education Department, China(No.13C236)

摘要:

研究了Fe(Ⅲ)催化氯代炔烃水化生成α-氯代甲基酮化合物的反应, 考察了催化剂的种类、 酸的种类、 反应温度以及溶剂对反应的影响.结果表明, 采用FeCl3·6H2O(摩尔分数5%)和甲基磺酸(摩尔分数20%), 在1,2-二氯乙烷溶剂中, 氯代炔烃于80 ℃进行水化反应3 h, 可以高产率得到α-氯代甲基酮产物. 所得化合物的结构采用IR, 1H NMR, 13C NMR及MS等方法进行了表征. 该水化反应合成方法简单、 条件温和且收率良好, 为合成α-氯代甲基酮提供了一种简便途径.

关键词: 铁催化, 炔基氯, α-氯代酮, 水化反应

Abstract:

α-Chloro-methyl ketones are among the most versatile intermediates in organic synthesis, and their high reactivity makes them prone to react with a large number of nucleophiles to provide a variety of useful compounds. Hydration of alkynes has emerged as a powerful method for synthesizing carbonyl compounds because of its atom efficiency and its environmental advantages. A novel iron-catalyzed hydration reaction of alkynyl chlorides to synthesize α-chloro-methyl ketones was developed. The influences of catalyst, acid, reaction temperature and solvent were investigated, the result indicated that the reaction proceeded smoothly to give the corresponding products in good yields using 5%(molar fraction) FeCl3·6H2O, 20%(molar fraction) MsOH and H2O in 1,2-dichloroethane(DCE) for 3 h at 80 ℃. The structure of α-chloromethyl ketone derivatives was confirmed by IR, 1H NMR, 13C NMR and MS. The reaction method with its advantages of simple procedure, mild reaction conditions and high yield provides a novel valuable approach to α-chloro-methyl ketones.

Key words: Iron catalysis, Alkynyl chloride, α-Chloromethyl ketone, Hydration reaction

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