𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Infrared and nuclear magnetic resonance properties of benzoyl derivatives of five-membered monoheterocycles and determination of aromaticity indices

✍ Scribed by Kyu Ok Jeon; Jung Ho Jun; Ji Sook Yu; Chang Kiu Lee

Publisher
Journal of Heterocyclic Chemistry
Year
2003
Tongue
English
Weight
91 KB
Volume
40
Category
Article
ISSN
0022-152X

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Benzophenones, 2‐benzoylthiophenes, 2‐benzoylpyrroles, and 2‐benzoylfurans, which have substituents at m‐ and p‐positions of the benzoyl ring were prepared and their ir and nmr spectra were obtained in 0.1 M chloroform‐d solution. The chemical shift values of each series were plotted against the Hammett substituent parameters to give good correlation, with the exception of the ortho‐Hs and ‐Cs. The slopes as well as the differences in chemical shift gave sets of meaningful values for the indices of aromaticy.

📜 SIMILAR VOLUMES

Determination of aromaticity indices of
Determination of aromaticity indices of thiophene and furan by nuclear magnetic resonance spectroscopic analysis of their anilides
✍ Chang Kiu Lee; Ji Sook Yu; Young Ran Ji 📂 Article 📅 2002 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 77 KB

## Abstract A series of __m__‐ and __p__‐substituted anilides of benzoic acid, 2‐thienoic acid, and 2‐furoic acid were prepared and their ^1^H and ^13^C nmr spectroscopic characteristics were examined. In general, good correlations were observed between the chemical shifts of proton and carbon sign

Determination of aromaticity indices of
Determination of aromaticity indices of thiophene and furan by nuclear magnetic resonance spectroscopic analysis of their phenyl esters
✍ Chang Kiu Lee; Ji Sook Yu; Hye-Jin Lee 📂 Article 📅 2002 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 69 KB

## Abstract A series of __m__‐ and __p__‐substituted phenyl benzoates, 2‐thienoates, and 2‐furoates were prepared and their ^1^H and ^13^C nmr spectroscopic characteristics were examined. In general, good correlations were observed between the chemical shift values of protons and carbons of the acy

Hydrogenation of low-molar-mass, OH-tele
Hydrogenation of low-molar-mass, OH-telechelic polybutadienes. II. Nuclear magnetic resonance and infrared spectrometric determination of hydroxyl end groups before and after hydrogenation by diimide
✍ J. Podešva; J. Spěváček; J. Dybal 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 209 KB 👁 2 views

1 H nuclear magnetic resonance ( 1 H-NMR), 13 C-NMR, and infrared spectroscopies were used to determine concentrations (c OH , in mmol/g) of the secondary hydroxyl end groups in the low-molar-mass, OH-telechelic polybutadienes, and their hydrogenated analogs. Mean OH-functionality ( f OH Յ 2), that