✦ LIBER ✦

Isotope effects on the 13C NMR chemical shifts of 5-substituted indoles: Evidence for electron density dependence on the hydrogen (deuterium) atom

✍ Scribed by M. S. Morales-Ríos; R. E. Del Río; P. Joseph-Nathan

Publisher: John Wiley and Sons
Year: 1989
Tongue: English
Weight: 794 KB
Volume: 27
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260271106

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

13C and 1H NMR chemical shifts of 9-alky

13C and 1H NMR chemical shifts of 9-alkyltriptycenes. Linear variations of 13C chemical shifts on successive substitution of the 9-methyl hydrogen atoms by methyl groups

✍ Fumio Imashiro; Kei Hirayama; A. Saika 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 275 KB

Conformational analysis XX—13C NMR studi

Conformational analysis XX—13C NMR studies of saturated heterocycles 5—substituent effects on the 13C chemical shifts of methyl substituted 1,3-dithiolanes

✍ Kalevi Pihlaja; Mauri Eskonmaa; Raimo Keskinen; Alpo Nikkilä; Timo Nurmi 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 309 KB 👁 1 views

## Abstract The ^13^C NMR chemical shifts for 1,3‐dithiolane and 13 methyl substituted derivatives are reported. Substituent effects are derived and compared with those for cyclopentanes and 1,3‐dioxolanes. The magnitude and variety of the substituent effects are best explained with the aid of a ha

13C NMR spectra of substituted phenazine

13C NMR spectra of substituted phenazines: Substituent effects on carbon-13 chemical shifts and the use of 13C15N coupling constants for the assignment of the aromatic carbons

✍ Axel Römer 📂 Article 📅 1983 🏛 John Wiley and Sons 🌐 English ⚖ 584 KB

The Effect of Electron-Donating and Elec

The Effect of Electron-Donating and Electron-Withdrawing Substituents on 1H-and 13C-NMR chemical shifts of novel 7′-aryl-substituted 7′-apo-β-carotenes

✍ Elli S. Hand; Kenneth A. Belmore; Lowell D. Kispert 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 German ⚖ 552 KB

Chiral recognition of the Schiff bases b

Chiral recognition of the Schiff bases by NMR spectroscopy in the presence of a chiral dirhodium complex. Deuterium isotope effect on 13C chemical shift of the optically active Schiff bases and their dirhodium adducts

✍ Z. Rozwadowski 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 148 KB

## Abstract The dirhodium method has been successfully applied in chiral recognition of the optically active Schiff bases, derivatives of __ortho__‐hydroxyaldehydes existing in the NH‐form. or at tautomeric equilibrium. The position of the equilibrium of Schiff bases as well as their adducts has be