@article{10272/15234,
year = {2017},
url = {http://hdl.handle.net/10272/15234},
abstract = {A dual mechanism for direct benzene catalytic hydroxylation is described. Experimental studies and DFT calculations have provided a mechanistic explanation for the acid-free, TpxCu-catalyzed hydroxylation of benzene with hydrogen peroxide (Tpx = hydrotrispyrazolylborate ligand). In contrast with other catalytic systems that promote this transformation through Fenton-like pathways, this system operates through a copper-oxyl intermediate that may interact with the arene ring following two different, competitive routes: (a) electrophilic aromatic substitution, with the copper-oxyl species acting as the formal electrophile, and (b) the so-called rebound mechanism, in which the hydrogen is abstracted by the Cu–O moiety prior to the C–O bond formation. Both pathways contribute to the global transformation albeit to different extents, the electrophilic substitution route seeming to be largely favoured.},
organization = {We thank MINECO for Grants CTQ2014-52769-C3-1-R and
CTQ2014-54071-P and COST Action CARISMA CM1205. D. B.
acknowledges the support from the Norwegian Research
Council through the Centre of Excellence for Theoretical and
Computational Chemistry (CTCC; grant No. 179568/V30), the
Norwegian Metacenter for Computational Science (NOTUR;
grant nn4654k) and the EU Research Executive Agency for
a Marie Curie Fellowship (grant CompuWOC/618303). We also
thank CATEDRA CEPSA-UHU for nancial support.},
publisher = {Royal Society of Chemistry},
keywords = {Hydroxylation},
keywords = {Hidrogen-peroxide},
keywords = {Hydroxylation},
keywords = {Molecular-oxygen},
title = {A competing, dual mechanism for catalytic direct benzene hydroxylation from combined experimental-DFT studies},
doi = {10.1039/c7sc02898a},
author = {Vilella, Laia and Conde Alcántara, Ana Isabel and Ballcells, David and Díaz Requejo, María Mar and Lledós, Agustín and Pérez Romero, Pedro José},
}