<sup>19</sup>F nuclear magnetic resonance studies of aromatic compounds. Part II. The<sup>19</sup>F chemical shifts in meta- and para-substituted fluorobenzenes, and 4-substituted 3′- and 4′-fluoro-trans-stilbenes
作者:I. R. Ager、L. Phillips、T. J. Tewson、V. Wray
DOI:10.1039/p29720001979
日期:——
the effects of substituents, X, upon the shielding of 19F nuclei in series of meta and para-X-fluorobenzenes, 4-X-4′-fluoro-trans-stilbenes, and 3′-fluoro-4-X-trans-stilbenes. The correlation of substituent chemical shifts for 19F nuclei in fluoroaromatic compounds with reactivity parameters is examined, and a reassessment is made of the Taft and Swain and Lupton separation of polar substituent effects
已经详细研究了取代基X对19 F原子核屏蔽的间位和对位-对-X-氟苯,4-X-4'-氟-反-对苯乙烯和3'-氟的屏蔽作用-4-X-反式-苯乙烯基。检查了氟芳族化合物中19 F核的取代基化学位移与反应性参数的相关性,并对塔夫脱和斯文和卢普顿将极性取代基效应分离成场/电感和共振成分进行了重新评估。