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首页> 外文期刊>Journal of spectroscopy >Synthesis and Conformational Assignment of N-(E)-Stilbenyloxymethylenecarbonyl-Substituted Hydrazones of Acetone ando-(m- andp-) Chloro- (nitro-) benzaldehydes by Means ofH1andC13NMR Spectroscopy
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Synthesis and Conformational Assignment of N-(E)-Stilbenyloxymethylenecarbonyl-Substituted Hydrazones of Acetone ando-(m- andp-) Chloro- (nitro-) benzaldehydes by Means ofH1andC13NMR Spectroscopy

机译:H 1和C 13 NMR光谱法对丙酮和邻-(间-和对-)氯-(硝基)苯甲醛的N-(E)-Stilbenyloxyoxymethyl羰基取代的Hy进行合成和构象分配

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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.
机译:制备了十八个新的邻-(间-和对-)氯-(硝基)苯甲醛1-18的N-(E)-二苯乙烯基氧烷基羰基取代的hydr,和两个类似的丙酮19-20。以19和20的光谱数据为支撑材料,通过H1NMR和C13NMR技术研究了1-18在二甲基-d6亚砜溶液中的立体化学行为。已经发现这些azo具有E-几何异构体和顺-/反酰胺构象异构体。报告了异构体的能垒。

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