Oximes as intermediates or final products in reactions of nitroheteroarenes with nucleophiles in the presence of sodium methoxide-methanol system
作者:J. Suwińaski、K. Świerczek、P. Wagner、M. Kubicki、T. Borowiak、J. Stowikowska
DOI:10.1002/jhet.5570400318
日期:2003.5
been shown that reactions of 4-nitroimidazoles and some other nitroaromatic systems with phenyl-acetonitrile in the presence of sodium methoxide in methanol lead to the reduction of the nitro to nitroso group and to the nucleophilic displacement of hydrogen atom at the ring by the respective carbanion followed by tautomerization of the nitroso compound to an oxime. Similar reactions of 4-nitroimidazoles
已经表明,在甲醇中存在甲醇钠的情况下,4-硝基咪唑和其他一些硝基芳族体系与苯基乙腈的反应会导致硝基还原为亚硝基,并导致环上氢原子的亲核取代。各自的碳负离子,然后将亚硝基化合物互变异构为肟。4-硝基咪唑与诸如由4-氨基-1,2,4-三唑生成的阴离子之类的亲核试剂的类似反应随着咪唑环化成1,2,4-恶二唑衍生物而发生,有时在反应介质中经历进一步的过程。通过X射线衍射分析已经确认了一些产品的结构。