𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Assignment of the location of the isopropylidene ring in 1-C-substituted-l-threo-glycerols by 13C-n.m.r. spectroscopy

✍ Scribed by El Sayed H. El Ashry; Yeldez El Kilany; Ahmed Mousaad


Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
156 KB
Volume
163
Category
Article
ISSN
0008-6215

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


The structure of 1,2-dithioles studied b
✍ Erik G. Frandsen; Jens P. Jacobsen 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 English ⚖ 331 KB

## Abstract The charge separation between the dithiole ring and oxygen in 3‐(1′,2′‐dithiole‐3′‐ylidene)‐6‐methyl‐2,3‐dihydropyran‐2,4‐diones and 3‐(1′,2′‐dithiole‐3′‐ylidene)‐2,3‐dihydrobenzo[__b__] pyran‐2,4‐diones has been determined by ^13^C and ^19^F n.m.r. spectroscopy. By both methods it is f

On the assignment of 13C resonances in u
✍ Earl B. Whipple 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 English ⚖ 262 KB

## Abstract Characteristic differences in multiplet hyperfine structure observed in coupled ^13^C n.m.r. spectra of symmetrical __o__‐disubstituted benzene rings are explained on general grounds. Contrary to earlier proposals, the observation of this effect in unsymmetrical systems is not a suitabl

N.m.r. studies in the heterocyclic serie
✍ Alain Fruchier; Ermitas Alcalde; José Elguero 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 English ⚖ 155 KB 👁 1 views

## Abstract The 1‐NH structure for 3‐azidoindazole has been demonstrated by the observation of ^1^H^1^H and ^13^C^1^H couplings involving the hydrogen atom attached to nitrogen. A comparison between 3‐azidoindazole and indazole shows that both compounds have the same tautomeric structure.

Investigation of Benzimidazoles. 5—trans
✍ V. A. Lopyrev; L. I. Larina; T. I. Vakul'skaya; M. F. Larin; E. F. Shibanova; I. 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 360 KB

The iniluence of substituents on the 'H, "C and 15N NMR chemical shifts of 2-substituted 5(6)nitrobenzimidazoles and their analogues labelled with 15N in the nitro group was investigated. It was found that the substituent effects are transmitted to the carbon and hydrogen nuclei in positions 4-7 mai