Three-Component Strategy toward 5-Membered Heterocycles from Isocyanide Dibromides.
作者:Laurent El Kaim、Laurence Grimaud、Pravin Patil
DOI:10.1021/ol200003u
日期:2011.3.4
A three-component strategy starting from isocyanides allows a straightforward synthesis of five-membered ring heterocycles. New cascades were developed involving the addition of a nitrogenated nucleophile—an azide or a tetrazole—on isocyanide dibromides, an electrocyclization, and a Suzuki coupling, which afford new accesses to tetrazole and triazole scaffolds.
从异氰酸酯开始的三组分策略允许直接合成五元环杂环。开发了新的级联反应,包括在异氰酸酯二溴化物上添加氮化的亲核试剂(叠氮化物或四唑),电环化和Suzuki偶联,为四唑和三唑骨架提供了新途径。