literature N-(E)-2-stilbenyloxymethylenecarbonyl substituted hydrazones of 2-, 3- and 4-pyridinecarboxaldehydes, as well as methyl-3-pyridylketone have been prepared. The stereochemical behavior of these compounds in dimethyl-d6 sulfoxide solution has been studied by 1H NMR technique. The E geometrical isomers and cis/trans amide conformers have been found for N-substituted hydrazones 1–12. EI induced mass
制备了十二种化合物,它们是2-,3-和
4-吡啶甲醛的N-(E)-2-
苯乙烯基氧亚甲基羰基取代的azo,以及甲基-3-
吡啶基酮。通过1 H NMR技术研究了这些化合物在二甲基-d 6亚砜溶液中的立体
化学行为。已发现N取代的azo 1–12的E几何异构体和顺/反酰胺构象。还研究了EI诱导的这些化合物的质谱碎裂。获得的数据为区分异构体奠定了基础。