title: Substituent electrophilicities in the NMR spectra of barbituric derivatives.
abstract: Comparison of the (1) H and (13)  C NMR spectra of a series of substituted 5-benzylidene-N,N'-dimethylbarbituric acids (1) revealed chemical-shift variations of different centers that correlated with the theoretical electrophilicities or with the substituent electrophilic constant σ(ω) , in an example of the usefulness of these DFT-based indices.
authors.affiliation: Facultad de Química y Biología, Universidad de Santiago, Santiago, Chile. marcos.caroli@usach.cl
authors.forename: Marcos Caroli
authors.initials: MC
authors.lastname: Rezende
authors.forename: Iriux
authors.initials: I
authors.lastname: Almodovar