19F nuclear magnetic resonance studies of aromatic compounds. Part III. The transmission of substituent effects across bridged ring systems
作者:I. R. Ager、L. Phillips、S. J. Roberts
DOI:10.1039/p29720001988
日期:——
bridged dinuclear aromatic compounds of the type p-F·C6H4·Z·C6H4·X-p[Z = all-trans-·CHCH–CHCH·, CCH2, CH2, CH(OH), CMe(OH), –O–, or –S–; X = NH2, OMe, H, F, Cl, or NO2] is described. The 19F n.m.r. spectra of these compounds are used to examine the ‘transmission’ of electronic effects, due to the group X, across the bridge Z. A distinction is drawn between ‘transmission effects’ in which electron density
几个系列的类型的双核桥接的芳族化合物的合成中p -F·C 6 H ^ 4 ·Z·C 6 H ^ 4 ·X- p [Z =清一色反式- ·CH CH-CH CH·,C CH 2,CH 2,CH(OH),CMe(OH),– O–或–S–;描述了X = NH 2,OMe,H,F,Cl或NO 2 ]。在19这些化合物的F nmr光谱用于检查由于基团X跨桥Z引起的电子效应的“透射”。在“透射效应”之间进行了区分,其中电子密度可以认为是从一个相互影响和“继电器效应”,其中可能没有电子密度的净转移。