KETO–ENOL TAUTOMERISM IN β-DICARBONYLS STUDIED BY NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY: II. SOLVENT EFFECTS ON PROTON CHEMICAL SHIFTS AND ON EQUILIBRIUM CONSTANTS

Autor:	Jane L. Burdett, Max T. Rogers
Rok vydání:	1965
Předmět:	Chemistry Chemical shift Organic Chemistry Proton NMR Organic chemistry Physical chemistry General Chemistry Keto–enol tautomerism Nuclear magnetic resonance spectroscopy Solvent effects Catalysis Equilibrium constant
Zdroj:	Canadian Journal of Chemistry. 43:1516-1526
ISSN:	1480-3291 0008-4042
DOI:	10.1139/v65-202
Popis:	The effect of various solvents on the proton chemical shifts of a number of acyclic β-di-ketones and β-ketoesters has been observed by nuclear magnetic resonance spectroscopy. These shifts are discussed in terms of the dissociation of intramolecular and intermolecular hydrogen bonds on dilution. A complex of benzene with the enol tautomer of the β-dicarbonyl molecule is proposed. The effect of solvents on the position of the tautomeric equilibrium is discussed.
Databáze:	OpenAIRE
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