𝔖 Bobbio Scriptorium
✦   LIBER   ✦

13C NMR study of the structures of some acyclic and cyclic ketene acetals

✍ Scribed by E. Taskinen; M.-L. Pentikäinen


Publisher
Elsevier Science
Year
1978
Tongue
French
Weight
522 KB
Volume
34
Category
Article
ISSN
0040-4020

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


13C-NMR. Spectra, Structure and Reactivi
✍ Werner Städeli; Roger Hollenstein; Wolfgang Von Philipsborn 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 German ⚖ 565 KB

## Abstract The structures of cyclic polyketones, their hydrates and reduction products were studied in different solvents by ^13^C‐NMR. spectroscopy. In dimethylsulfoxide solution rhodizonic acid **(1)**, croconic acid **(2)** and squaric acid **(3)** exhibit signal averaging. In anhydrous tetrahy

13C NMR of acyclic sulphonated compounds
✍ J. P. Canselier; J. L. Boyer; V. Castro; G. L. Card; J. Mohtasham; D. H. Peyton; 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 405 KB

## Abstract A chemical shift analysis of the ^13^C NMR spectra of more than 50 acyclic sulphonic acids, alkali metal sulphonates and methyl esters was carried out. Chemical shift increment systems with __n__‐alkanes as reference molecules were established for linear alkanesulphonates and alk‐2‐enes

1H and 13C NMR study of the enol–enolic
✍ N. N. Shapet'ko; I. L. Radushnova; Yu. S. Bogachev; S. S. Berestova; V. M. Potap 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 268 KB

## Abstract Aldehyde (δCH) and enolic (δOH) proton chemical shifts, the corresponding spin–spin coupling constants (__J__CH,OH) and the ^13^C chemical shifts (δC) have been measured for three cyclic β‐ketoaldehydes as a function of temperature. A tautomeric equilibrium has been shown to exist betwe