NMR spectra of intramolecularly hydrogen-bonded compounds—II : Schiff bases of β-diketones and o-hydroxycarbonyl compounds

Conformational study of a guaiacyl β-O-4

Conformational study of a guaiacyl β-O-4 lignin model compound by NMR. Examination of intramolecular hydrogen bonding interactions and conformational flexibility in solution

✍ Stéphane Besombes; Jean-Pierre Utille; Karim Mazeau; Danielle Robert; François R 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 258 KB

## Abstract Intramolecular H‐bonding interactions were investigated in solution for the __threo__ and __erythro__ diastereomeric forms of a guaiacyl β‐O‐4 lignin model compound by using the NMR data obtained from hydroxyl protons. Temperature coefficients of the chemical shifts (dδ/d__T__) and coup