Abstract: The ¹³C-NMR spectra of three ethyl 3 (or 4)-x-benzenecarboximidates (1) and eight ethyl N-cyanomethyl-3 (or 4)-x-benzenecarboximidates (2) were determined. All ¹³C chemical shifts were assigned. The substituent chemical shifts (SCS) of -C-OCH₂CH₃=NCH₂CN was obtained. Correlations of the ¹³C chemical shifts of aromatic carbons with the appropriate substituent chemical shifts (SCS) for monosubstituted benzenes show nonadditivity at C-2, 6 in compounds lb-g and 2b-e, at C-1 in compounds 1h-j and 2f-h. Dual subslituent parameter correlations of the ¹³C chemical shifts were also performed in this paper.

Key words: Imidate, Correlation analysis, Substituent chemical shift (SCS), Substituent constant:¹³C-NMR