DBU-promoted cyclization of vinyl isocyanides with ethers via the functionalization of a C(sp3)–H bond for the synthesis of isoquinolines†
Abstract
A DBU-promoted cascade functionalization of a C(sp3)–H bond adjacent to oxygen and a radical cyclization reaction of vinyl isocyanides were developed. The reaction was carried out without the use of any metal catalysts or photoredox catalysis, which provides easy access to multi-functionalized isoquinolines.