A5091461082- Asymmetric Hydrogenation and Catalysis
- Carbon dioxide utilization in catalysis
- Organophosphorus compounds synthesis
- Phosphorus compounds and reactions
- Chemical Synthesis and Analysis
- Synthesis and Reactivity of Sulfur-Containing Compounds
- Asymmetric Synthesis and Catalysis
- Crystallization and Solubility Studies
- CO2 Reduction Techniques and Catalysts
- Organometallic Complex Synthesis and Catalysis
- X-ray Diffraction in Crystallography
- Catalytic Cross-Coupling Reactions
- Axial and Atropisomeric Chirality Synthesis
- Porphyrin and Phthalocyanine Chemistry
- Synthesis and Catalytic Reactions
- biodegradable polymer synthesis and properties
- Catalytic C–H Functionalization Methods
- Catalytic Alkyne Reactions
- Chemistry and Chemical Engineering
- Oxidative Organic Chemistry Reactions
- Synthesis and Biological Evaluation
- Fluorine in Organic Chemistry
- Chemical Synthesis and Reactions
- Carbohydrate Chemistry and Synthesis
- Ionic liquids properties and applications
University of Coimbra
2015-2025
Universitat Rovira i Virgili
2017
University of Pecs
2013
New and highly active mononuclear phosphite gold(I) catalysts are described. Turn-over numbers up to 37 000 for the furan–yne reaction 28 two-fold hydroalkoxylation of alkynes reported.
Abstract Catalytic hydroformylation is an important reaction, widely studied by academics and applied in the chemical industry, it a paradigmatic example of reaction that aligned with most Green Chemistry principles. In last years, global requirement for more sustainable processes has boosted development active, selective, reusable catalysts. this review, we highlight recent advances regarding creation expansion catalysts sequential use as central reaction. The relevant strategies...
Abstract Catalytic carbon dioxide transformation to low valence molecules such as monoxide, formic acid, methanol and methane is a sustainable way produce fuels chemicals. Molecular catalysts can be designed selectively transform CO 2 at mild conditions, but solvent medium required. Instead, the molecular immobilized on solid supports facilitate continuous flow procedure separation of products recycle catalytic systems for more process. Photosensitive may also favor light‐absorbing steps...
Comprehensive Summary Carbon monoxide (CO) has become one of the most relevant and versatile renewable C1 building blocks for chemical synthesis, especially in fine chemicals industry, due to development efficient selective catalysts its activation. In this review, we present a comprehensive critical analysis last 10 years literature on use CO as feedstock production. The review is organized by type catalytic reaction, namely alkene alkyne carbonylation, hydroformylation, carbonylation aryl...
This study introduces a novel approach for the one‐step preparation of carboxamide porphyrin‐amino acid bioconjugates via palladium/xantphos‐catalyzed aminocarbonylation 5,15‐dibromo‐10,20‐diphenylporphyrin and 5,10,15,20‐tetrakis(4‐bromophenyl)porphyrin, under relatively mild conditions (70‐100 ºC, 1 atm CO), using natural amino methyl ester derivatives as N‐nucleophiles. optimized methodology led to different families amphiphilic porphyrins containing between one four acids through bonds,...
Abstract The synthesis and full characterization of manganese chromium metalloporphyrins hybrid magnetic nanocomposites prepared thereof is described. Their application in homogeneous heterogeneous sequential epoxidation/CO 2 cycloaddition reactions by using O or H as the oxidant showed high activity selectivity for preparation a variety cyclic carbonates directly from olefins. combination allowed us to set keystone development reusable dual catalytic system transform olefins into carbonates.
Nowadays, society’s widespread consumption of pharmaceutical drugs and the consequent accumulation such compounds or their metabolites in effluents requires development efficient strategies systems that lead to effective degradation. This can be done through oxidative processes, which tetrapyrrolic macrocycles (porphyrins, phthalocyanines) deserve special attention since they are among most promising degradation catalysts. paper presents a review literature over past ten years on major...
Abstract An efficient one‐step synthetic strategy was used to prepare a set of dicarboxamides through palladium‐catalysed aminocarbonylation iodoalkenyl and iodoaryl compounds, with use various alkyl‐ aryldiamines as N‐nucleophiles. The isolated yields the depended significantly on iodo substrate diamine structures, well reaction conditions, best one (ca. 70 %) being achieved 1‐iodocyclohexene 1,4‐diaminobutane nucleophile, at 100 °C 30 bar CO. When iodobenzene model aryl halide, highest...
Herein we report the synthesis of unsymmetrical meso-aryl substituted porphyrins, using NaY zeolite as an inorganic acid catalyst. A comparative study between this method and several synthetic strategies available in literature was carried out. Our presented a better, more cost-efficient rationale displayed significantly lower environmental impact. Furthermore, it possible to verify scalability process well reutilization catalyst (up 6 times) without significant yield decrease. In addition,...
The synthesis and characterization of a hybrid Mn(III)-porphyrin magnetic nanocomposite is described. Moreover, sustainable methodology for epoxidation olefins reported, using O[Formula: see text] as green oxidant the nanoparticle recyclable catalyst. High activity in alkene oxidation was observed, with full selectivity epoxide formation. catalyst presented high stability, being recovered reused five consecutive runs without loss catalytic or cyclooctene oxidation. system showed very good...
Abstract In this paper, we report an easy and highly efficient methodology for the synthesis of novel binaphthyl-based chiral monophosphites with C3-symmetry. The preparation respective platinum complexes their characterization by suitable in situ NMR spectroscopic studies confirmed noteworthy hemilabile potential new phosphite ligands.
Metal complexes of meso-arylporphyrins (Cr(III), Fe(III), and Zn(II)) were evaluated in the coupling reaction cyclohexene oxide (CHO) with CO2 compressed medium, where Cr demonstrated to be most active systems, leading predominantly copolymerisation products. It is noteworthy that no addition solvent was required. To improve catalytic activity, simultaneously increase solubility CO2, a new fluorinated catalyst, tetrakis(4-trifluoromethylphenyl)porphyrinatochromium(III) chloride...
Abstract Neutral allyl–palladium complexes stabilised by bulky tris‐binaphthyl monophosphite ligands have been prepared and fully characterised in solution NMR spectroscopy, which evidenced a dynamic equilibrium between two diastereomeric species. The new phosphite evaluated as catalytic precursors the asymmetric hydrovinylation of styrene; they show moderate activity good to excellent chemo‐ enantioselectivity depending on substituent at ligand 2′‐binaphthyl position. Remarkably, palladium...
Herein we describe the design of natural curcumin ester and ether derivatives their application as potential bioplasticizers, to prepare photosensitive phthalate-free PVC-based materials. The preparation films incorporating several loadings newly synthesized along with standard solid-state characterization is also described. Remarkably, plasticizing effect in PVC material was found be similar that observed previous PVC–phthalate Finally, studies applying these new materials photoinactivation...
A comparative study on the transesterification of natural oils obtained from Calophyllum inophyllum seeds was carried out using homogeneous (NaOH/MeOH) or heterogeneous catalysts, with conventional heating and under microwave irradiation. The results show that microwave-assisted reaction renewable sources (rice husk egg shell ashes), constitutes an energetically sustainable approach for transesterification. In order to obtain value-added products oils, rhodium/monophosphite catalysts were...