journal6 ›› 2007, Vol. 28 ›› Issue (6): 102-104.

• Chemistry and chemical engineering • Previous Articles     Next Articles

Solvent-Free Synthesis of Cyclohexanone 1,2-Propanediol Ketal  Catalyzed  by Sulphonic Acid  Under Microwave Irradiation


  1.  (1.College of Chemistry and Chemical Engineering,Hunan Normal University,Changsha 410081,Hunan China;2.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China)
  • Online:2007-11-25 Published:2012-06-10

Abstract: Cyclohexanone 1,2-propanediol ketal was synthesized from cyclohexanone and 1,2-propanediol using p-toluene sulphonic acid  as catalysts without  solvent under microwave irradiation.The effects of reactant ratio,amount of catalyst,microwave irradiation power and microwave irradiation time on the yield of cyclohexanone 1,2-propanediol ketal were studied.The optimal conditions for the synthesis were as follows:n(cyclohexanone)∶n(1,2-propanediol)=1∶1.6,mass ratio of catalyst to reactant 0.5%,microwave irradiation power 350W and radiation time 3min.Under these conditions,the yield of cyclohexanone 1,2-propanediol ketal could reach 78.0%.

Key words: cyclohexanone 1,2-propanediol ketal, p-toluene sulphonic acid, microwave synthesis

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