A5024278541- Radical Photochemical Reactions
- Oxidative Organic Chemistry Reactions
- Electrochemical Analysis and Applications
- CO2 Reduction Techniques and Catalysts
- Catalytic C–H Functionalization Methods
- Ionic liquids properties and applications
- Conducting polymers and applications
- Catalytic Alkyne Reactions
- Sulfur-Based Synthesis Techniques
- Analytical Chemistry and Sensors
- Electrochemical sensors and biosensors
- Electrocatalysts for Energy Conversion
- Cyclopropane Reaction Mechanisms
- Advanced Chemical Sensor Technologies
- Inorganic and Organometallic Chemistry
- Crystallization and Solubility Studies
- Various Chemistry Research Topics
- Organometallic Complex Synthesis and Catalysis
- Chemical Reaction Mechanisms
- Asymmetric Hydrogenation and Catalysis
- X-ray Diffraction in Crystallography
- Plant-derived Lignans Synthesis and Bioactivity
- Chemical Synthesis and Reactions
- Asymmetric Synthesis and Catalysis
- Analytical Chemistry and Chromatography
University of Minho
2009-2020
Indiana University
2015
University of Beira Interior
2011
Université Côte d'Azur
2007
Indiana University Bloomington
2003
University of Southampton
1999
École Normale Supérieure - PSL
1997
Centre National de la Recherche Scientifique
1997
Cyclic voltammetry and controlled-potential electrolysis have been employed to investigate characterize the reductive intramolecular cyclization of ethyl 2-bromo-3-(3',4'-dimethoxyphenyl)-3-(propargyloxy)propanoate (1) promoted by (1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane)nickel(I), [Ni(tmc)](+), electrogenerated at glassy carbon cathodes in dimethylformamide containing tetraalkylammonium salts. voltammograms for reduction [Ni(tmc)](2+) presence 1 reveal that [Ni(tmc)](+)...
New polymer electrolytes (PEs), potentially interesting for solid-state electrochemical devices applications, were synthesized by a solvent casting method using pectin and ionic liquid (IL) N,N,N-trimethyl-N-(2-hydroxyethyl)ammonium bis(trifluoromethylsulfonyl)imide ([N1 1 2(OH)] [NTf2]. The resulting besides being moderately homogenous thermally stable below 155°C, they also exhibited good mechanical properties. SPE membranes analyzed differential scanning calorimetry (DSC), X-ray...
This review summarises electrochemical reductive intramolecular cyclisations, including transition-metal catalysed reactions. It presents some selected examples of organic halide electroreductions with further coupling reactions, carbonyl group reductions and cyclisations involving electrogenerated bases.
Abstract Reductive intramolecular cyclization of ethyl 2‐bromo‐3‐(3′,4′‐methylenedioxyphenyl)‐3‐(propargyloxy)propanoate( 1 ) and 3‐allyloxy‐2‐bromo‐3‐(3′,4′‐dimethoxyphenyl)propanoate ( 2 promoted by (1,4,8,11‐tetramethyl‐1,4,8,11‐tetraazacyclotetradecane)nickel( I ), [Ni(tmc)] + , electrogenerated at glassy‐carbon cathodes in dimethylformamide containing tetraalkylammonium salts, has been investigated. Cyclic voltammograms for reduction 2+ the presence reveal that catalytically reduces...
The electrochemical intramolecular cyclisation of propargyl 2-bromoethers 1–3 in N,N′-dimethylformamide at constant current a diaphragmless cell has been developed using NiII complexes as electron-transfer mediators. During controlled-current electrolyses solutions the presence bromoethers, catalytic reduction latter proceeds via one-electron cleavage carbon–bromine bond to form radical intermediate that undergoes afford cyclic compounds moderate good yields.
The electrochemical intramolecular cyclisation of α-bromo propargyloxy (1 and 2) allyloxy (3) esters was carried out in ethanol ethanol–water mixtures as environmentally friendly systems using Ni(II) complexes the catalysts. reduction substrates proceeds via one-electron cleavage carbon–bromine bond to form a radical-type intermediate that undergoes afford cyclic ethers moderate good yields.
Abstract The electrochemical intramolecular cyclization of propargyl derivatives containing a carbonhalogen bond in N,N'-dimethylformamide at constant current diaphragmless cell has been developed using Ni(II) complexes as electron-transfer mediators.