We document the intramolecular interception of a Cu-catalyzed azidoalkyne cycloaddition employing a suitably placed nitrone group, providing a simple route to the unprecedented spiro-polyheterocyclic scaffold. The reaction is comprised of a Cu-catalyzed [3 + 2]-cycloaddition of (2-azidoaryl)isatogen with a terminal alkyne and the intramolecular trapping of the transient Cu-triazolide intermediate with
我们记录了使用适当放置的硝酮基团进行
铜催化的
叠氮炔环加成的分子内拦截,为前所未有的螺环多杂环支架提供了一条简单的途径。该反应包括(2-
叠氮芳基)异种原与末端炔的 Cu 催化 [3 + 2]-环加成反应,以及瞬态 Cu-三唑化物中间体与异种原的分子内捕获,最终形成一个 C- C 和两个 C-N 键以及新的螺环杂环。