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›› 2006, Vol. 40 ›› Issue (3): 25-28.

• 研究报道 • Previous Articles     Next Articles

Synthesis of α-Pinene-Maleic Anhydride Adduct

LUO Chang-quan, DUAN Wen-gui, CEN Bo, BAN Li-na   

  1. College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
  • Received:2005-12-14 Revised:1900-01-01 Online:2006-05-30 Published:2006-05-30

Abstract: 1-Isopropyl-4-methyl bicyclooct-5-ene-2,3-dicarboxylic anhydride (α-terpinene-maleic anhydride adduct,TMA) was prepared via isomerization of α-pinene followed by Diels-Alder reaction with maleic anhydride in the presence of DLB catalyst. Influence factors such as reaction temperature, dosage and variety of catalyst and reaction time were studied, and the optimum conditions were found by orthogonal tests to be as follows: reaction temperature 145℃, dosage of catalyst DLB 3% (based on the weight of α-pinene), reaction time 1.0 h (molar ratio 1.4:1 of α-pinene to maleic anhydride). The yield of TMA amounted to 88% and the purity was up to 92%. The TMA was analyzed and characterized by IR, TLC, GC and GC-MS.

Key words: α-pinene, α-pinene-maleic anhydride adduct, synthesis

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