Radical-based regioselective cross-coupling of indoles and cycloalkanes†
Abstract
An investigation into the regiochemistry of radical functionalization of indoles using cycloalkanes through di-tert-butyl peroxide (DTBP)-promoted C(sp3)–H activation was conducted. A wide range of indoles bearing substituents at different positions was functionalized directly with simple cycloalkanes in moderate to high regioselectivity. 2-, 4- and 7-positions were mainly functionalized.