作者:Malykhin、Sukhorukov, A. Yu.
DOI:10.1007/s11172-024-4247-1
日期:——
Cyclization of hydroxy-substituted gem-chloronitroso compounds under the action of bases affords cyclic nitronates, namely, isoxazoline N-oxides and 5,6-dihydro-4H-1,2-oxazine N-oxides. The process is reversible, viz., the chloronitroso compounds are regenerated upon the action of hydrogen chloride on the cyclization products. A method for the synthesis of cyclic nitronates from aldols using the title
羟基取代的偕氯亚硝基化合物在碱的作用下环化得到环状硝基化合物,即异恶唑啉N-氧化物和5,6-二氢-4H-1,2-恶嗪N-氧化物。该过程是可逆的,即环化产物在氯化氢作用下再生氯亚硝基化合物。开发了一种使用标题反应从羟醛合成环状硝基化合物的方法。利用紫外-可见光和红外监测以及量子化学计算结果研究了环化机理并确定了该过程的动力学参数。