𝔖 Bobbio Scriptorium
✦   LIBER   ✦

1H and 13C NMR studies of two monosubstituted [2.2]paracyclophanes

✍ Scribed by Arlette Solladié-Cavallo; Marcel Hibert

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
252 KB
Volume
16
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

250 MHz ^1^H NMR of two monosubstituted [2.2]paracyclophanes shows that whether the substituent is an electron releasing group, OMe, or a withdrawing group, CO~2~Me, the transannular effect is deshielding. 62.86 MHz ^13^C NMR shows that among the six transannular effects, only one has a sign which changes with the nature of the substituent (–4.6 ppm for OMe but +3.3 ppm for CO~2~Me).

📜 SIMILAR VOLUMES

1H and 13C NMR studies of some aromatic
1H and 13C NMR studies of some aromatic dilactones (precursors of paracyclophanes)
✍ Arlette Solladié-Cavallo; Marcel Hilbert 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 379 KB

## Abstract Carbon‐13 and proton NMR data of macrocyclic diaromatic dilactones are presented. The observed behaviour of the spectra as a function of temperature shows that the energy barrier for the re‐orientation of the side chains is lower than 49 kJ mol^−1^ (12 kcal mol^−1^) and that the energy

1H and 13C two-dimensional NMR study of
1H and 13C two-dimensional NMR study of magainin 1
✍ Chin Yu; Ta-Horng Yang 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 318 KB

## Abstract The ^1^H and ^13^C NMR spectra of magainin 1, a sterilizing agent of the skin, were studied using two‐dimensional techniques. All the ^1^H and ^13^C NMR resonances were unambiguously determined from a combination of 2D homo‐ and heteronuclear NMR spectroscopy.

1H and 13C NMR studies of E/Z 2-hydroxyi
1H and 13C NMR studies of E/Z 2-hydroxyindolenines
✍ Martha S. Morales-Ríos; M. Alvina Bucio; Pedro Joseph-Nathan 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 295 KB 👁 1 views

## Abstract The ^1^H NMR spectra of E/Z 2‐hydroxyindolenines are reported in both CDCl~3~ and DMSO‐d~6~ solvents. The data suggest a preferred conformation of the heterocyclic ring, which is slightly distorted from planarity, in agreement with the x‐ray crystallographic data of one of the isomers.

1H and 13C NMR study of 2-substituted ph
1H and 13C NMR study of 2-substituted phenyl methyl sulphides
✍ S. Perumal; R. Chandrasekaran; S. Selvaraj; M. Ganesan; D. A. Wilson 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 47 KB 👁 2 views

The 1 H and 13 C NMR spectra of seven 2-substituted phenyl methyl sulphides were measured and their chemical shifts assigned on the basis of two-dimensional NMR techniques such as H,H-COSY and C,H-COSY. The chemical shifts of these sulphides were correlated with the appropriate SCS values of monosub

1H and 13C NMR studies of 2-functionaliz
1H and 13C NMR studies of 2-functionalized 5-(methylsulfonyl)-1-phenyl-1H-indoles
✍ Olga Cruz-López; Miguel A. Gallo; Antonio Espinosa; Joaquín M. Campos 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 116 KB

## Abstract The ^1^H and ^13^C NMR resonances of thirty 2‐functionalized 5‐(methylsulfonyl)‐1‐phenyl‐1__H__‐indoles were assigned completely and unequivocally using the concerted application of one‐ and two‐dimensional experiments (DEPT, gs‐HMQC and gs‐HMBC). Finally, the influence of the 2‐substit