Chemical Research in Chinese Universities ›› 2017, Vol. 33 ›› Issue (5): 746-752.doi: 10.1007/s40242-017-7082-1

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FeCl3·6H2O-Catalyzed Synthesis of β-Ketothioesters from Chain α-Oxo Ketene Dithioactals

ZHAO Hui1, DIAO Quanping1, YU Haifeng1,2, LI Tiechun1, LIAO Peiqiu2, HOU Dongyan1   

  1. 1. School of Chemistry and Life Science, Anshan Normal University, Anshan 114007, P. R. China;
    2. Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
  • Received:2017-03-07 Revised:2017-04-05 Online:2017-10-01 Published:2017-07-21
  • Contact: YU Haifeng,E-mail:yuhf68105@sina.com;HOU Dongyan,houdyas@163.com E-mail:yuhf68105@sina.com;houdyas@163.com
  • Supported by:

    Supported by the Fundamental Research Funds for the Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, China(No.130028652); the Natural Science Foundation of Liaoning Province, China(No.201602002); the Foundation of Liaoning Province Education Administration, China(No.L2015003); the National Natural Science Foundation of China(No.20902010).

Abstract:

A FeCl3·6H2O-catalyzed synthesis of β-ketothioesters from the hydrolysis reaction of chain α-oxoketene dithioacetals was carried out. Subsequently, we explored the FeCl3·6H2O-catalyzed Friedel-Crafts alkylation of the synthesized β-ketothioesters with alcohols in CH3CN at 25℃, affording the desired α-alkylated β-ketothioesters in excellent yields. Wide scope of the substrates, use of inexpensive reagents, high yields under mild reaction conditions are notable features of these reactions.

Key words: Iron(Ⅲ) chloride, Thioester, Ketene dithioacetal, Hydrolysis, Friedel-Crafts alkylation