New methods of preparation of nitrile oxides and the corresponding disubstituted furoxans by interaction of N2O4 with salts of substituted dinitromethanes
作者:N. N. Makhova、I. V. Ovchinnikov、V. G. Dubonos、Yu. A. Strelenko、L. I. Khmel'nitsky
DOI:10.1007/bf00699994
日期:1993.1
A new method of generation of nitrile oxides through interaction of N2O4 with salts of substituted dinitromethanes (1) has been worked out. It has been shown by1H,13C,14N NMR spectroscopy that this reaction proceeds via dinitronitrosomethyl intermediates (one of these has been isolated), and that the reaction is feasible only for substituents capable of conjugation with the nitrile oxide fragment.
已经研究出一种通过 N2O4 与取代二硝基甲烷 (1) 的盐相互作用生成腈氧化物的新方法。1H、13C、14N NMR光谱表明,该反应通过二亚硝基甲基中间体(其中之一已被分离)进行,并且该反应仅对于能够与氧化腈片段缀合的取代基是可行的。在所得腈氧化物环二聚化的基础上,开发了合成对称取代呋喃的制备方法。