cyclic ethers is described. In this method, the combination of POCl3 and DBU is crucial for conversion of arylamines and cyclic ethers to five- and six-membered azacycles. Without solvent, a variety of N-aryl-substituted, five-membered azacycles (pyrrolidines, 2-methylpyrrolidines, and piperidine) and six-membered azacycles (isoindolines and tetrahydroisoquinolines) are synthesized in high yields. This
描述了一种用于从芳基胺和
环醚制备N-芳基取代的氮
杂环化合物的无溶剂和
金属方案。在这种方法中,POCl 3和
DBU的组合对于将芳胺和环状醚转化为五元和六元氮杂环至关重要。在没有溶剂的情况下,可以高收率合成各种N-芳基取代的五元氮杂环(
吡咯烷,
2-甲基吡咯烷和
哌啶)和六元氮杂环(
异吲哚啉和
四氢异喹啉)。这种绿色方法为从各种环状醚制备氮
杂环化合物提供了一种可持续而有效的方法。