Synthesis of five-membered cyclic nitrones based on the Lewis acid-catalysed [3+2]-annulation reaction of donor–acceptor cyclopropanes with 1,4,2-dioxazoles
作者:Zhe-Hao Wang、Huan-Huan Zhang、Peng-Fei Xu、Yong-Chun Luo
DOI:10.1039/c8cc04656e
日期:——
A novel synthesis of five-membered cyclic nitrones has been developed based on the Lewis acid-catalysed [3+2]-annulation reaction of D–A cyclopropanes with 1,4,2-dioxazoles. Broad substrate scope and generally good yield make this reaction useful in the preparation of nitrones. When a suitable 1,4,2-dioxazole was used, nitrone and tetrahydrofuran could be prepared in one pot with high atom economy
基于路易斯酸催化D–A环丙烷与1,4,2-二恶唑的[3 + 2]环化反应,开发了五元环硝酮的新型合成方法。广泛的底物范围和通常良好的产率使该反应可用于制备硝酮。当使用合适的1,4,2-二恶唑时,可以在一个具有高原子经济性的锅中制备硝酮和四氢呋喃。