Synthesis and Conformational Assignment of N-(E)-Stilbenyloxymethylenecarbonyl-Substituted Hydrazones of Acetone ando-(m- andp-) Chloro- (nitro-) benzaldehydes by Means ofH1andC13NMR Spectroscopy

[摘要] Eighteen new N-(E)-stilbenyloxyalkylcarbonyl-substituted hydrazones ofortho- (meta- andpara-) chloro- (nitro-) benzaldehydes1–18and two analogous hydrazones of acetone19-20were prepared. The stereochemical behavior of1–18in dimethyl-d6sulfoxide solution has been studied byH1NMR andC13NMR techniques, using spectral data of19and20as supporting material. The E-geometrical isomers and cis-/trans-amide conformers have been found for these hydrazones. Energy barriers of isomers are reported.

[学科分类] 光谱学