Acta Phys. -Chim. Sin. ›› 1994, Vol. 10 ›› Issue (02): 151-153.doi: 10.3866/PKU.WHXB19940212

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Study on Thermodynamic Characteristics of Cinnamic Acid Derivatives

Huang Wei-Jun, Chen Su-Ming, Tan Fu, Yang Zhen-Xiang   

  1. Institute of Chemistry, Academia Sinica, Beijing 100080| Division of Medicinal Chemistry, China Pharmaceutical University
  • Received:1992-06-08 Revised:1992-10-07 Published:1994-02-15
  • Contact: Huang Wei-Jun

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Abstract:

The phase transitions of 2-methoxycinnamic acid, 3-methoxycinnamic acid, 4-methoxycinnamic acid and 4-hydroxy-3-methoxycinnamic acid were studied by DSC. The thermodynamic parameters of phase transitions for these compounds are reported in this paper. In addition, the ~1H-NMR spectra of compounds 2-methoxycinnamic acid, 3-methoxycinnamic acid and 4-methoxycinnamic acid have been measured, and the change of β-H chemical shifts is consitent with that of DSC data fOr these compounds.

Key words: Cinnamic acid derivative, DSC(Differential Scanning Calorimetry), Ferulic acid, Enthalpy of fusion