Intramolecular activation of aromatic C–H bonds by tantalum alkylidene groups: evaluating ‘cyclometallation resistant’ aryloxide ligation
Abstract
The ligands 2,3,5,6-tetraphenylphenoxide and 3,5-dimethyl-2,6-diphenylphenoxide undergo intramolecular aromatic C–H bond activation by tantalum alkylidene groups at rates 20 and 100 times slower than simple 2,6-diphenylphenoxide.