𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Solvent shifts in the NMR spectra of α-halo-β-methoxy-carbonyl compounds : Assignment of the α- and β-proton magnetic resonances

✍ Scribed by M.C. Cabaleiro; N.N. Giagante; M.A. León


Publisher
Elsevier Science
Year
1977
Tongue
French
Weight
266 KB
Volume
33
Category
Article
ISSN
0040-4020

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


Torsion angle relationship of the 17O NM
✍ Francesca Mocci 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 212 KB

## Abstract The torsion angle effect on the isotropic shielding of ^17^O nucleus in α,β‐unsaturated carbonyl groups is studied by means of density functional theory (DFT) calculations using a polarizable continuum model (PCM) for the solvent, employing the PBE0 functional together with the 6‐311G(d

Carbon-13 NMR studies in the polycyclic
✍ J. C. Gramain; J. C. Quirion 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 English ⚖ 711 KB

A new 13C N M R method based on solvent effects allows the identification of carbon atoms a to a carbonyl group. With a simple change in solvent from CDCl, to CDC1,-dioxane (1:4), the -C absorption for all carbons except those a to the carbonyl group in the compounds under study were displaced to lo

Complete assignment of the 1H and 13C NM
✍ David E. Minter; Alar P. Marchand; Shao-Po Lu 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 380 KB

## Abstract Diels–Alder cycloaddition of a mixture of 1‐ and 2‐methylcyclopentadienes (1a and 1b, respectively) to 2‐methoxy‐__p__‐benzoquinone (2) gave a mixture of isomeric __endo__ [4 + 2] cycloadducts (3a–3d). Fractional recrystallization of this product mixture from EtOAc‐hexane gave 6‐methoxy

Preparation of α-diazocarbonyl compounds
✍ Vitor F. Ferreira; Alessandra Jorqueira; Kátia Z. Leal; Hélio R. X. Pimentel; Pe 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 291 KB

The assignment of the diazo site in products of the reaction of p-toluenesulfonylhydrazine with b-lapachone, 3,4-dihydro-2,2-dimethyl-2H-naphtho[1,2-b]pyran-5,6-dione, and other 1,2-naphthoquinones in methanol solution at room temperature has been accomplished using 1 H, 13 C HMBC and 1 H, 15 N HMBC