Regioselective [3+2] cycloaddition of nitrile oxides to 1Н-pyrrole-2,3-diones: synthesis of spiro[pyrroledioxazoles]
作者:Anna А. Moroz、Maksim V. Dmitriev、Andrey N. Maslivets
DOI:10.1007/s10593-021-03047-6
日期:2021.12
1,3-Dipolar cycloaddition of 1H-pyrrole-2,3-diones to nitrile oxides generated in situ from N-hydroxybenzimidoyl chlorides by the action of triethylamine proceeds regioselectively with the formation of 1,4,2-dioxazoles spiro-condensed with the pyrrol-2-one fragment.
通过三乙胺的作用,1 H-吡咯-2,3-二酮与 N-羟基苯甲亚胺酰氯原位生成的腈氧化物发生1,3-偶极环加成反应,区域选择性地形成 1,4,2-二恶唑,与pyrrol-2-one 片段。