Benzylic Ligand Hydroxylation Starting from a Dicopper μ-η2:η2 Peroxo Intermediate: Dramatic Acceleration of the Reaction by Hydrogen-Atom Donors
作者:Malte Rolff、Jessica Nadine Hamann、Felix Tuczek
DOI:10.1002/anie.201102332
日期:2011.7.18
in directed pathways: The μ‐η2:η2peroxo CuII2 intermediate 1 shows a much faster benzylicligandhydroxylation than systems without phenol. This novel reactivity can be further accelerated by addition of external H‐atom donors such as TEMPO‐H. The results imply initial H‐atom transfer leading to the formation of phenoxyl radicals. A highly reactive copper oxyl intermediate is then formed, which inserts