A5081659118- Porphyrin and Phthalocyanine Chemistry
- Metal-Catalyzed Oxygenation Mechanisms
- Oxidative Organic Chemistry Reactions
- Carbon dioxide utilization in catalysis
- CO2 Reduction Techniques and Catalysts
- X-ray Diffraction in Crystallography
- Catalysis for Biomass Conversion
- Crystallization and Solubility Studies
- Advanced oxidation water treatment
- Catalysts for Methane Reforming
- Heme Oxygenase-1 and Carbon Monoxide
- Pharmaceutical and Antibiotic Environmental Impacts
- Neonatal Health and Biochemistry
- Free Radicals and Antioxidants
- Porphyrin Metabolism and Disorders
- Synthesis and Characterization of Pyrroles
- Antibiotics Pharmacokinetics and Efficacy
- Bioactive Compounds and Antitumor Agents
- Natural product bioactivities and synthesis
- Traditional and Medicinal Uses of Annonaceae
- Water Treatment and Disinfection
Universidade Federal de Minas Gerais
2014-2023
Instituto de Investigaciones en Ciencias de la Salud
2016-2021
Abstract A series of 5,10,15,20‐tetrakis(2,3‐dichlorophenyl)porphyrinate complexes manganese(III) [Mn III (T2,3DCPP)X] with six different axial ligands (X=NO 3 − , AcO IO Br Cl HO ) were investigated as catalysts in the cycloaddition reactions CO 2 and styrene oxide (SO), under mild conditions, i. e., atmospheric pressure 60 °C. T(2,3DCPP)IO ] showed best catalytic performance, selectively producing respective cyclic carbonate from diverse epoxides using tetrabutylammonium bromide a...
Mn(<sc>iii</sc>)–porphyrin catalysts with electron-withdrawing substituents were designed to uncover electronic and structural aspects in the cycloaddition of CO<sub>2</sub> epoxides.
A novel β-brominated Mn-porphyrin acts as a good catalyst for alkane (cyclohexane, adamantine and <italic>n</italic>-hexane) oxidation in biomimetic systems.
Chemical fixation of CO2 to produce cyclic carbonates can be a green and atomic efficient process. In this work, series porphyrazines (Pzs) containing electron-withdrawing groups central MII ions (where M = Mg, Zn, Cu, Co) were synthesized investigated as catalysts for the cycloaddition epoxides. Then, efficiency Pzs was tested by varying cocatalyst type concentration, epoxide, temperature, pressure. MgIIPz bearing trifluoromethyl (1) showed best conversion, producing, selectively, 78%...
Abstract This work describes the oxidation of benzylamine by PhIO, catalyzed a series first‐row metal salts and respective first‐, second‐, third‐generation metalloporphyrins. Five products were identified in reactions with [Mn III TPPCl]/PhIO. In this system, two obtained (benzaldehyde oxime N ‐benzylbenzamide) not previously described when TPPCl] was used as catalyst. The change oxidant type (PhIO, PhI(OAc) 2 , H O or m ‐CPBA) modified selectivity for major product presence TPPCl]. For...
Abstract Manganese porphyrins are widely studied as catalysts for oxidation reactions of different organic substrates. In this work, we evaluate the catalytic activity manganese complexes derived from meso ‐tetrakis(2‐, 3‐, or 4‐pyridyl) porphyrin isomers, [Mn(TXPyP)]Cl (X = 2, 3, 4), and respective β‐octabrominated counter‐parts, [Mn(Br 8 TXPyP)], cyclohexane by PhI(OAc) 2 . At first, describe synthesis characterization a new third‐generation porphyrin, T4PyP)]. It presented more positive...
Less polar solvents could modulate the catalytic activity of Mn( iii )-porphyrins in carvacrol's oxidation leading to polymer/oligomer formation instead thymoquinone formation.