Selective Esterification of Gossypol by Copper Acetate in Acetonitrile-Spectroscopic Studies

Gossypol and its 1: 1 complexes with copper acetate in acetonitrile were studied by FTIR and UV-visible spectroscopy. With the complexation with Cu cation the tautomeric equilibrium of gossypol is completely shifted from the aldehyde-aldehyde to the lactol-lactol tautomer. The acidic character of O...

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Veröffentlicht in:	Spectroscopy letters 1994-11, Vol.27 (9), p.1143-1151
Hauptverfasser:	Brzezinski, Bogumil, Marciniak, Bronislaw, Kozubek, Halina, Paszyc, Stefan
Format:	Artikel
Sprache:	eng
Schlagworte:	Copper Acetate FTIR Gossypol UV-visible absorption spectra
Online-Zugang:	Volltext
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Zusammenfassung:	Gossypol and its 1: 1 complexes with copper acetate in acetonitrile were studied by FTIR and UV-visible spectroscopy. With the complexation with Cu cation the tautomeric equilibrium of gossypol is completely shifted from the aldehyde-aldehyde to the lactol-lactol tautomer. The acidic character of O 11 H group in the gossypol-Cu complex led to the selective esterification of the lactol form of gossypol by the acetate group.
ISSN:	0038-7010 1532-2289
DOI:	10.1080/00387019408006972