Suk-Eun Na, Gong Guo-liang
2009
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Journal
Chemistry World
Abstract
2-Ethyl-1,1-[2,2-bis[[(2-ethyl-1-oxohexyl)oxy]methyl]-1,3-propanediyl] ester was synthesized through the esterification of pentaerythritol and isocaprylic acid under solvent-free condition.Effects of amount and species of catalyst,charge ratio of the raw materials,reaction temperature and reaction time were investigated.The optimal esterification conditions were as follows: para-toluenesulfonic acid was the best catalyst with usage amount of 2% based on the total weight of the raw materials,n(pentaerythritol)∶n(isocaprylic acid)=1∶5,and the reaction was carried out at 160 ℃ for 5 h while the esterification rate of 97% was obtained.The structure of the product was determined by FT IR spectroscopy.