Artículos de revistas
Configuration of stilbene derivatives by (1)H NMR and theoretical calculation of chemical shifts
Fecha
2010Registro en:
JOURNAL OF MOLECULAR STRUCTURE, v.975, n.1/Mar, p.59-62, 2010
0022-2860
10.1016/j.molstruc.2010.03.079
Autor
ROTTA, Rodrigo
CUNHA NETO, Alvaro
LIMA, Denis Pires de
BEATRIZ, Adilson
SILVA, Gil Valdo Jose da
Institución
Resumen
The direct E/Z configuration assignment of tri- and tetra-substituted stilbenes (and other analogous olefins) when only one of the isomers is available is a quite challenging task. Sometimes, a chemical transformation or some other tedious method is necessary for determination of the double bond substitution pattern. In this paper, we relied on theoretical calculation of chemical shifts as a complementary tool for (1)H NMR determination of the configuration of an alpha-phenylcinnamic acid prepared as a unique isomer by the Perkin reaction. (C) 2010 Elsevier B.V. All rights reserved.