𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Study of the 13C NMR chemical shifts in a series of heterocycles related to 9,10-dihydroanthracene

✍ Scribed by L.R Isbrandt; R.K Jensen; L Petrakis


Publisher
Elsevier Science
Year
1973
Weight
319 KB
Volume
12
Category
Article
ISSN
0022-2364

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


Application of factor analysis to the st
✍ Kenneth B. Wiberg; William E. Pratt; William F. Bailey 📂 Article 📅 1978 🏛 Elsevier Science 🌐 French ⚖ 258 KB

Although the subject of numerous investigations, the origins of 13C nmr chemical shifts are still not well understood.a In order to simplify the problem, we have examined a wide variety of halogen substituted (F,Cl,Br,I) compounds. The similarity of the C-X bond dipoles" should minimize contribution

NMR studies in the heterocyclic series.
✍ Jean-Pierre Fayet; Marie-Claire Vertut; Alain Fruchier; El Mostafa Tjiou; José E 📂 Article 📅 1978 🏛 John Wiley and Sons 🌐 English ⚖ 385 KB

## Abstract The carbon‐13 chemical shifts and the ^1^__J__(CH) coupling constants for 18 azolium salts (di‐__N__‐methyl‐pyrazolium, ‐indazolium, ‐benzimidazolium and ‐benzotriazolium iodides) have been determined and assigned. The chemical shifts are discussed as a function of substituent effects,

NMR studies in the heterocyclic series x
✍ Mikael Begtrup; José Elguero; Enrique Díez-Barra; Carmen Pardo 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 314 KB

Chemical shifts and coupling constants are reported for seven azole derivatives (iidamles, triazoles and their b e m derivatives), their quaternary salts and the corresponding dicyanomethylides. The assignment of the heterocyclic carbons is based on couplings with the N-methyl group. Compared with n

13C NMR chemical shifts of heterocycles.
✍ Marcos A. P. Martins; Anna C. L. Martins 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 244 KB

## Abstract Evaluation by empirically derived equations for the substituent effect (α, β, γ, δ) on the ^13^C NMR chemical shifts for C‐3, C‐4, C‐5 and halomethyl‐substituent carbon (C‐6) in 5‐halomethyl‐5‐hydroxy‐4,5‐dihydroisoxazoles (where C‐3 substituent=H), alkyl or phenyl, C‐4 substituent=H, a