𝔖 Bobbio Scriptorium
✦   LIBER   ✦

13C NMR substituent chemical shifts in hydroxy-p-benzoquinones

✍ Scribed by Eleuterio Burgueño-Tapia; Pedro Joseph-Nathan

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
55 KB
Volume
38
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

13C NMR chemical shifts of heterocycles.
13C NMR chemical shifts of heterocycles. Empirical substituent effects in 5-halomethyl-5-hydroxy-4,5-dihydroisoxazoles
✍ 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

13C NMR chemical shift substituent effec
13C NMR chemical shift substituent effects. 4–α-monosubstituted acetones
✍ Roberto Rittner; José A. Vanin; Blanka Wladislaw 📂 Article 📅 1988 🏛 John Wiley and Sons 🌐 English ⚖ 301 KB

NMR chemical shifts for some a-heterosubstituted acetones were recorded. The carbonyl carbon shieldings are discussed in the light of the substituent electronic effects and were also empirically estimated by Tanaka et d ? s equation. An approximate linear relationship was observed between the I3C an

13C NMR chemical shifts of carbonyl grou
13C NMR chemical shifts of carbonyl groups in substituted benzaldehydes and acetophenones: substituent chemical shift increments
✍ Stephanie Patterson-Elenbaum; John T. Stanley; Debra K. Dillner; Shirley Lin; Da 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 172 KB

## Abstract ^13^C NMR Substituent chemical shift (SCS) increments have been determined for the carbonyl carbon of a variety of substituted benzaldehydes and acetophenones. The ^13^C NMR chemical shift of the carbonyl carbon can be predicted for many di‐ and trisubstituted benzaldehydes and acetophe

Substituent effects on 13C13C coupling c
Substituent effects on 13C13C coupling constants and chemical shifts in 13C labelled polycyclic aromatic hydroxy compounds
✍ P. E. Hansen; O. K. Poulsen; A. Berg 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 302 KB

## Abstract The effects of an hydroxy substituent on ^13^C^13^C coupling constants and ^13^C chemical shifts have been measured in 1‐hydroxynaphthalene‐2‐^13^C and 1‐hydroxypyrene‐1‐^13^C. The changes observed in the ^13^C^13^C couplings show the effect of a substituent attached directly to the l

Substituent-induced chemical shift 13C N
Substituent-induced chemical shift 13C NMR study of substituted 2-phenylthiazolidines
✍ R. Umarani 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 183 KB

## Abstract The analysis of the ^13^C NMR chemical shifts of 16 substituted 2‐phenylthiazolidines shows that the 1,3‐thiazolid‐2‐yl group exerts a deshielding effect at the __ipso__ carbon (C‐1′) and shielding effects at the __ortho__ and __para__ positions of the benzene ring (C‐2′ and C‐4′), and

Substituent effects on the 13C NMR chemi
Substituent effects on the 13C NMR chemical shifts of 1-hydroxyalkylphosphonic acids
✍ Zdzisław Glowacki; Maria Hoffmann 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 208 KB

## Abstract ^13^C chemical shifts and ^31^P,^13^C coupling constants are reported for nine 1‐hydroxyalkylphosphonic and two additional phosphonic acids. The α‐substituent‐induced chemical shifts (α‐SCS) of the phosphonate group were calculated and their non‐additivity was observed. Good linear corr