Concepedia

VT <sup>1</sup>H NMR Investigations of Resonance-Assisted Intramolecular Hydrogen Bonding in 4-(Dimethylamino)-2‘-hydroxychalcone

Nanette Wachter‐Jurcsak, Charles A. Detmer

Organic Letters · 1999 · 16 citations · 7 references

DOI

Concepts

Abstract

[reaction: see text] Resonance-assisted intramolecular hydrogen bonding in both polar aprotic and nonpolar solutions of 4-(dimethylamino)-2'-hydroxychalcone (DMAHC) has been investigated by variable-temperature proton NMR spectroscopy. In both nonpolar and polar solvents, the signal for the phenolic hydrogen moves downfield as the temperature is lowered. In each solvent system studied, a linear relationship between chemical shift and temperature was observed.

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