Synthesis and Conformational Assignment of N-(E)‎-Stilbenyloxymethylenecarbonyl-Substituted Hydrazones of Acetone and o-(m- and p-)‎ Chloro- (nitro-)‎ benzaldehydes by Means of H1 and C13 NMR Spectroscopy

الملخص EN

Eighteen new N-(E)-stilbenyloxyalkylcarbonyl-substituted hydrazones of ortho- (meta- and para-) chloro- (nitro-) benzaldehydes 1–18 and two analogous hydrazones of acetone 19-20 were prepared.

The stereochemical behavior of 1–18 in dimethyl-d6 sulfoxide solution has been studied by H1 NMR and C13 NMR techniques, using spectral data of 19 and 20 as supporting material.

The E-geometrical isomers and cis-/trans-amide conformers have been found for these hydrazones.

Energy barriers of isomers are reported.