𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Comparative conformational studies of cyclic derivatives by 13C NMR spectroscopy

✍ Scribed by Joseph Casanova; Jean-Pierre Zahra; Bernard Waegell

Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
315 KB
Volume
13
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The ^13^C chemical shift of the substituted or functionalized carbon of various medium and large rings is plotted against ring size (6–15 carbons). The curves thus obtained allow a conformational analysis of the corresponding derivatives.

📜 SIMILAR VOLUMES

Conformational Studies by Low Temperatur
Conformational Studies by Low Temperature 13C-NMR Spectroscopy
✍ Dr. Hans-Jörg Schneider; Dr. Roger Price; Ing. Toni Keller 📂 Article 📅 1971 🏛 John Wiley and Sons 🌐 English ⚖ 199 KB 👁 2 views

3 a ) and (3c) or (Sf) formed as minor products on reaction ( I ) with methyl acryiate or methyl propiolate were synthesized isomer-free from the diester (1') and characterized. The data for the compounds prepared are summarized in Table .

Conformational equilibria in isomeric me
Conformational equilibria in isomeric methylcyclohexanols studied by 13C NMR spectroscopy
✍ O. A. Subbotin; N. M. Sergeyev; V. N. Chlopkov; N. G. Nikishova; Yu. G. Bundel 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 English ⚖ 319 KB

## Abstract The conformational equilibrium constants for isomeric methylcyclohexanols (__cis__‐ and __trans__‐1,2‐, 1,3‐ and 1,4‐methylcyclohexanols) have been determined from peak area measurements in the completely proton decoupled low temperature ^13^C NMR spectra of the individual conformers. T

Configurational and conformational studi
Configurational and conformational studies of N,N-dimethylpiperidinium derivatives by 13C and 1H NMR spectroscopy
✍ A. F. Casy; F. O. Ogungbamila 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 449 KB

## Abstract The ^13^C and ^1^H NMR spectra of a series of methiodides of mono‐ and di‐C‐methyl derivatives of 1‐methyl‐4‐phenyl‐4‐piperidinols are reported and chemical shift data analysed in terms of configurations and conformations of isomeric sets. Results demondtrate the value of quaternary sal

Conformational studies of monoterpenes.
Conformational studies of monoterpenes. II–conformational studies of bicyclo[3.1.1]heptane derivatives by 13C NMR
✍ Collette M. Holden; David Whittaker 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 316 KB

## Abstract The carbon‐13 spectra of seventeen bicyclo[3.1.1]‐heptane derivatives have been recorded and assigned. Study of the C‐6 and C‐7 chemical shifts permits the conformations to be assigned to the bridged chair, Y‐shaped, or bridged boat conformations. The spectrum of verbenone is anomalous

Comparative 13C NMR study of the conform
Comparative 13C NMR study of the conformations of malic and thiomalic acids
✍ Victor M. S. Gil 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 252 KB

## Abstract Vicinal and geminal ^13^CO~2~H^1^H coupling constants are reported for malic and thiomalic acids at various pH values and related, in a comparative manner, to the known conformational information obtained by ^1^H NMR.