Chin. J. Org. Chem. ›› 1995, Vol. 15 ›› Issue (5): 475-480. Previous Articles     Next Articles

Original Articles

以σ~△~E^H^O度量取代基电子效应强度的定量判据

周文富   

  1. 三明高等师范专科学校
  • 发布日期:1995-10-25

σ~△~E^H^O as a quantitative critertion of the measurement of the electronic effect of substituents

ZHOU WENFU   

  • Published:1995-10-25

Comparison of the calculated σ~△~E^H^O or σ~△~E^L^U values with the electrophilic or nucleophilic reactivities at benzene ring of more than sixty Ph(X)n molecules taken from the experimental data found in literature has been carried out. The σ~△~E^H^O value accupately be positively parallel to the intramolecular and intermolecular electrophilic reactivity and vice versa for the σE^L^U value, while the cases of CN, CF3 and F groups are exceptional.

Key words: REACTIVITY, BENZENE P, ELECTROPHILIC REACTION, SUBSTITUENT EFFECT, ELECTRONIC EFFECT, NUCLEOPHILIC REACTION

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