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Chemistry and Industry of Forest Products ›› 2015, Vol. 35 ›› Issue (3): 33-37.doi: 10.3969/j.issn.0253-2417.2015.03.006

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Synthesis and Structural Characterization of Diisobornyl Oxalate

ZHANG Ping-hui1, GUO Li-qun2, YUAN Xiao-min1, XU Shi-chao1, ZHAO Zhen-dong1,3, BI Liang-wu1,3, LI Dong-mei1,3   

  1. 1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab.for Biomass Chemical Utilization; Key and Open Lab.of Forest Chemical Engineering, SFA; Key Lab.of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
    2. Yunnan Pharmaceutical Industrial Co., Ltd., Kunming 650106, China;
    3. Research Institute of Forestry New Technology, CAF, Beijing 100091, China
  • Received:2014-04-25 Online:2015-06-25 Published:2015-07-03

Abstract: Diisobornyl oxalate was obtained by rearrangement,addition and esterification reactions from camphene and oxalic acid with boric anhydride as catalyst.The effects of reaction conditions such as material ratio,dosage of catalyst,reaction temperature and reaction time on the conversion of camphene and the selectivity of diisobornyl oxalate were explored.The results showed that the optimal synthetic conditions were:the mass ratio of camphene,anhydrous oxalic acid and catalyst 1.7:2:1,reaction time 96 h,and reaction temperature 55 ℃.Under these conditions,the conversion rate of camphene was 89.5% and the selectivity of diisobornyl oxalate was 95.6%.The structure of diisobornyl oxalate was characterized by IR,LCMS-IT-TOF, 1H NMR and 13C NMR.

Key words: camphene, diisobornyl oxalate, structural characterization

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