Research Article
Synthesis and Conformational Assignment of N-(E)-Stilbenyloxymethylenecarbonyl-Substituted Hydrazones of Acetone and o-(m- and p-) Chloro- (nitro-) benzaldehydes by Means of and NMR Spectroscopy
Table 13
1H and 13C NMR data of cis/trans conformers of N-(E)-4-X-stilbenyl-4′-oxymethylenecarbonyl substituted hydrazones of acetone (19, 20); 19 X = Cl. 20 X = NO2.
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*The difference between the percentage of the conformers calculated from the 1H NMR and 13C NMR data. |