Features of the reaction of heterocyclic analogs of chalcone with lanthanide shift reagents

Journal Article · Sat Oct 01 00:00:00 EDT 1994 · Chemistry of Heterocyclic Compounds

DOI:https://doi.org/10.1007/BF01169931· OSTI ID:241170

Turov, A V; Khilya, V P ^[1]

---

1. Taras Shevchenko Kiev Univ. (Russian Federation)

The PMR spectra of heterocyclic analogs of 2-hydroxychalcone containing thiazole, benzofuran, triazole, imidazole, benzodioxane, or pyridine rings in the presence of lanthanide shift reagents are studied. It is found that the most effective reagent for modifying the spectra of these compounds is Yb(fod)3. The broadening of the spectra of 2-hydroxy chalcones in the presence of lanthanide shift reagents is explained by the dynamic effects of complex formation. An example is given of the determination of the conformation of molecules of 2-hydroxychalcone by the simultaneous use of lanthanide shift reagents and the homonuclear Overhauser effect. 9 refs., 1 fig., 1 tab.

• Sponsoring Organization: USDOE
• OSTI ID: 241170
• Journal Information: Chemistry of Heterocyclic Compounds, Vol. 30, Issue 4; Other Information: PBD: Oct 1994; TN: Translated from Khimiya Geterotsiklicheskikh Soedinenii; No. 4, 457-463(Apr 1994)
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
YTTERBIUM COMPOUNDS
NUCLEAR MAGNETIC RESONANCE
ORGANIC COMPOUNDS