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Abstract:

The conversion of flavanone and 7‐hydroxyflavanone in alkaline water and heavy water and of the same compounds and of 4′ ‐nitroflavanone in alkali‐methanolic media into the corresponding substituted chalcones was studied kinetically and spectroscopically. Treatment of kinetic data in this work and data for the reverse reaction determined previously allowed the estimation of the partial rate coefficients for each step and of the free‐energy changes for the three systems studied. To disentangle isotope effects, the conversion of [3‐D2]‐flavanone was also studied. The present results confirm a previously suggested mechanism for the spontaneous reaction and afford essential information that may contribute to a more detailed understanding of the mechanism of the enzyme‐catalysed reaction. Copyright © 1991 John Wiley & Sons Ltd.

Registro:

Documento: Artículo
Título:Conversion of flavanones into chalcones in alkaline medium. Kinetic and spectroscopic studies
Autor:Nudelman, N.S.; Furlong, J.J.P.
Filiación:Depto. Química Orgánica, Facultad de Ciencias Exactas, Universidad de Buenos Aires, Pab. II, P. 3, Buenos Aires, 1428, Argentina
Facultad de Química, UNSL, Cátedra de Química Física II, Bioquímica y Farmacia, San Luis, 5700, Argentina
Año:1991
Volumen:4
Número:5
Página de inicio:263
Página de fin:270
DOI: http://dx.doi.org/10.1002/poc.610040502
Título revista:Journal of Physical Organic Chemistry
Título revista abreviado:J Phys Org Chem
ISSN:08943230
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08943230_v4_n5_p263_Nudelman

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Citas:

---------- APA ----------
Nudelman, N.S. & Furlong, J.J.P. (1991) . Conversion of flavanones into chalcones in alkaline medium. Kinetic and spectroscopic studies. Journal of Physical Organic Chemistry, 4(5), 263-270.
http://dx.doi.org/10.1002/poc.610040502
---------- CHICAGO ----------
Nudelman, N.S., Furlong, J.J.P. "Conversion of flavanones into chalcones in alkaline medium. Kinetic and spectroscopic studies" . Journal of Physical Organic Chemistry 4, no. 5 (1991) : 263-270.
http://dx.doi.org/10.1002/poc.610040502
---------- MLA ----------
Nudelman, N.S., Furlong, J.J.P. "Conversion of flavanones into chalcones in alkaline medium. Kinetic and spectroscopic studies" . Journal of Physical Organic Chemistry, vol. 4, no. 5, 1991, pp. 263-270.
http://dx.doi.org/10.1002/poc.610040502
---------- VANCOUVER ----------
Nudelman, N.S., Furlong, J.J.P. Conversion of flavanones into chalcones in alkaline medium. Kinetic and spectroscopic studies. J Phys Org Chem. 1991;4(5):263-270.
http://dx.doi.org/10.1002/poc.610040502