在此,我们描述了铜(I)催化苯并呋喃与2-(氯甲基)苯胺的脱芳构化反应,以良好至优异的产率制备各种四氢苯并呋喃并[3,2- b ]喹啉和2-(喹啉-2-基)苯酚自由基加成和分子内环化过程。机理研究表明,2-(氯甲基)苯胺是自由基前体。该方法具有底物范围广、官能团耐受性好、喹啉支架多样性以及苯并呋喃自由基加成脱芳构化等特点。
By combination of 1,3-dipolar cycloaddition and N–O single bond insertion, tandem synthesis of dibenzo[1,4]oxazepino[4,5-a]quinolines was accomplished. Reaction of quinoline N-oxides with arynes afforded 2-(2-hydroxyphenyl)quinolines and 7-membered pentacyclic oxazepino[4,5-a]quinolines.