One step from nitro to oxime: a convenient preparation of unsaturated oximes by the reduction of the corresponding vinylnitro compounds
作者:Kewei Wang、Xuhong Qian、Jingnan Cui
DOI:10.1016/j.tet.2009.10.042
日期:2009.12
A series of novel unsaturated oximes were conveniently prepared from the corresponding vinylnitro compounds by reduction with SnCl2·2H2O. The structures of the oximes were characterized by 1H and 13C NMR, IR and HRMS, and X-ray crystallography analysis of 1-(6-chloro-pyridin-3-ylmethyl)-4,5-dihydro-1H-imidazole-2-carbaldehyde oxime 2a reveals that, the hydroxyl group is arranged in a trans configuration
可以通过相应的乙烯基硝基化合物通过SnCl 2 ·2H 2 O还原而方便地制备一系列新型不饱和肟。肟的结构通过1 H和13 C NMR,IR和HRMS以及X射线晶体学分析进行表征。 1-(6-氯-吡啶-3-基甲基)-4,5-二氢-1H-咪唑-2-甲醛甲醛肟2a表明,羟基以反式构型排列。简短调查的一些证据表明,这些肟似乎是由硝基脂族化合物的aci形式还原而形成的。