Formal Alkylation of Allenes through Highly Selective Radical Cyclizations of Allene-enes
作者:Rong Zeng、Chunling Fu、Shengming Ma
DOI:10.1002/anie.201107747
日期:2012.4.16
example of alkene‐to‐allene radical cyclization of allene‐enes is reported. The highly chemoselective intermolecular radical addition reaction of the alkene and subsequent, exclusive exo‐radical addition to the allene was realized with perfluoroalkyl radicals (see scheme). A subsequent TBAF‐promoted dehydroiodination of the cyclization products forms cyclopentanes and regenerates an allene moiety (TBAF=t