Solvent effects in nuclear magnetic resonance spectroscopy. Part XIII. Solvent shifts induced by benzene in some α,β-unsaturated compounds. An aid to the determination of stereochemistry
- 1 January 1967
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society C: Organic
- p. 2642-2645
- https://doi.org/10.1039/j39670002642
Abstract
The solvent shifts (Δ=δ CCl4 –δ C6H6 or δ CCl4 –δ C6D6 p.p.m.) of proton resonances in some α,β-unsaturated acids, esters, nitriles, halides, and nitro-compounds have been determined. In general preferential shielding in benzene solution of the protons trans to the polar substituent is observed. The solvent shifts are therefore of assistance in the determination of stereochemistry in such compounds. The solvent shift method is used to confirm previous stereochemical assignments in geranic and phytenoic acids.Keywords
This publication has 0 references indexed in Scilit: