✦ LIBER ✦

Configurational and conformational studies of N,N-dimethylpiperidinium derivatives by 13C and 1H NMR spectroscopy

✍ Scribed by A. F. Casy; F. O. Ogungbamila

Publisher: John Wiley and Sons
Year: 1982
Tongue: English
Weight: 449 KB
Volume: 18
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1270180312

No coin nor oath required. For personal study only.

✦ Synopsis

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 salt NMR data as an aid to configurational assignment, and the evaluation of non‐bonded interactions governing conformational equilibria in piperidine derivatives.

📜 SIMILAR VOLUMES

Configurational and conformational analy

Configurational and conformational analysis of O-vinyl ketoximes by 1H and 13C NMR spectroscopy

✍ Andrei V. Afonin; Igor A. Ushakov; Sergei V. Zinchenko; Olga A. Tarasova; Boris 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 87 KB 👁 2 views

Comparative conformational studies of cy

Comparative conformational studies of cyclic derivatives by 13C NMR spectroscopy

✍ Joseph Casanova; Jean-Pierre Zahra; Bernard Waegell 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 English ⚖ 315 KB

## 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.

Furoxan rearrangement of some pyridofuro

Furoxan rearrangement of some pyridofuroxan derivatives studied by 1H, 13C, 14N, 15N and 17O NMR spectroscopy

✍ P. Cmoch; B. Kamieński; K. Kamieńska-Trela; L. Stefaniak; G. A. Webb 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 107 KB 👁 1 views

Pyridofuroxan ([1,2,5]oxodiazolo [3,4-b]pyridine 1-oxide) undergoes isomerization between the N1oxide and N3-oxide forms which can be observed by the 1 H, 13 C and 15 N NMR spectroscopy but not by 14 N and 17 O NMR at ambient and low temperatures. The rearrangement becomes slower at low temperatures

1H, 13C and 15N NMR spectroscopy and tau

1H, 13C and 15N NMR spectroscopy and tautomerism of nitrobenzotriazoles

✍ Lyudmila I. Larina; Viktor Milata 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 139 KB

13C and 1H NMR spectral studies of N-alk

13C and 1H NMR spectral studies of N-alkylmethylquinolinium salts

✍ Jolanta Jaroszewska; Iwona Wawer; Janusz Oszczapowicz 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 English ⚖ 446 KB

13C and 1H NMR study of N-5′-methylsalic

13C and 1H NMR study of N-5′-methylsalicylideneanilines

✍ K. Kishore; D. N. Sathyanarayana; V. A. Bhanu 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 297 KB

The "C and 'H NMR spectra of six N-5'-methylsalicylideneanilines have been studied. Correlations of the chemical shifts of C-a (azomethine carbon) and C-4' with the cr, F, R , crI and a: parameters have been examined for N-5'-methylsalicylideneanilines, and also for N-benzylideneanilines and N-salic