Chinese Journal of Magnetic Resonance ›› 1992, Vol. 9 ›› Issue (3): 303-306.

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STUDIES ON THE EFFECT OF INTRAMOLECULAR HYDROGEN BONDING ON 1H CHEMICAL SHIFT OF AROMATIC PROTON

Pei Yuehu, Kong Lingyi, Li Xian, Zhu Tingru   

  1. Shengyang College of Pharmacy, Shengyang 110015
  • Received:1991-08-01 Revised:1992-03-08 Published:1992-09-05 Online:2018-01-20

Abstract: The 1H NMR spectra of 19 phenol compounds were analysed and studied here. The result showed that when intramolecular hydrogen bond is formed at the phenolic hydroxyl group the resonace of the para-aromatic hydrogen shifts to higher magnetic field. This shift is greater than that of the ortho-aromatic hydrogen. The diffence is about 0. 1ppm-0.3 ppm.

Key words: Phenols, Intramolecular hydrogen bond, 1H NMR, Chemical shift