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China Surfactant Detergent & Cosmetics ›› 2016, Vol. 46 ›› Issue (5): 292-295.doi: 10.13218/j.cnki.csdc.2016.05.011

• Developmentandapplicatio • Previous Articles     Next Articles

Preparation of 3-methyl-2-cyclopentene-1-ketone by base catalyzed dehydration of 2,5-hexanedione

LI Yue-qin,YANG Yong-xing,HOU Xiang-lin   

  1. Shanxi Engineering Research Center of Biorefinery,Institute of Coal Chemistry, Chinese Academy of Sciences,Taiyuan,Shanxi 030001,China
  • Online:2016-05-22 Published:2016-05-22

Abstract: 3-Methyl-2-cyclopentane-1-ketone was synthesized via base catalyzed dehydration of 2,5-hexanedione in a weakly polar organic solvent.Effects of separate kinds of base catalyst,different dosages of the catalyst,as well as different reaction conditions on the yield of the product were investigated.The optimum experimental conditions were determined as following:sodium silicate as the base catalyst;reaction temperature,180 ℃;reaction time,5.0 h;cyclohexane as the solvent.Under such experimental conditions,the yield of 3-methyl-2-cyclopentane-1-ketone can achieve 98%.

Key words: spice, 2,5-hexanedione, 3-methyl-2-cyclopentane-1-ketone, base catalysis

CLC Number: 

  • TQ655