O-17 NMR SPECTROSCOPIC STUDY OF SUBSTITUTED 9-FLUORENONES

被引：5

作者：

BOYKIN, DW

NOWAKWYDRA, B

机构：

[1] Department of Chemistry, Georgia State University, Atlanta, Georgia

来源：

MAGNETIC RESONANCE IN CHEMISTRY | 1991年 / 29卷 / 02期

关键词：

O-17 NMR CHEMICAL SHIFTS; 9-FLUORENONES;

D O I：

10.1002/mrc.1260290211

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The O-17 NMR chemical shift data for 23 9-fluorenones in acetonitrile at 75-degrees-C are reported. O-17 NMR data for the 3-substituted 9-fluorenones are correlated with O-17 NMR data for 4-substituted acetophenones. Chemical shift data for 1-halogeno-9-fluorenones are deshielded relative to the 3-isomers, suggesting important repulsive van der Waals interactions. The keto carbonyl signal for 9-fluorenone-1-carboxylic acid is substantially shielded, as expected, from intramolecular hydrogen bonding. The data for several multi-substituted 9-fluorenones demonstrate that substituent effects are additive for the 9-fluorenones.

引用

页码：152 / 155

页数：4

共 23 条

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