A first free-radical triggered site-specific cross dehydrogenative coupling reaction of heterocycles with simple nitriles is developed. It allows efficient and facile access to various C-2 cyanoalkylated furans, thiophenes, indoles, and pyrroles. The extremely high selectivities in this case indicate that functionalization of an inert C–H bond could be well-controlled by radical initiation.
开发了一种首次由自由基触发的异环化合物与简单腈发生特定位点的脱氢交叉偶联反应。它能够有效且便捷地获得各种C-2氰基烷基化的呋喃、噻吩、吲哚和吡咯。在这种情况下极高的选择性表明,通过自由基引发可以很好地控制惰性C-H键的官能化。