Less polar solvents could modulate the catalytic activity of Mn(III)-porphyrins in carvacrol's oxidation leading to polymer/oligomer formation instead of thymoquinone formation.
The unsubstituted iron–oxo porphyrin reacts with unsubstituted benzylic C–H bond substrates via a synchronous HAT mechanism. In contrast, when an electron-rich iron–oxo porphyrin reacts with electron-poor substrates, it follows a basic asynchronous HAT mechanism.
A comprehensive theoretical investigation of CO2 electroreduction catalyzed by pyrox- and bpy-Mn complexes reveals that the synergistic modulation of axial and heterocyclic ligands enables low overpotential and high catalytic activity.
A suitable model for computational study giving reliable estimation of the catalytic effect of σ-hole donating organocatalysts is suggested.
A new [Au(I)] catalyzed intramolecular hydrocarboxylation of allenes is presented as a valuable synthetic route to oxazino-indolones.