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reaction

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α-C-H DIFLUOROALKYLATION OF ALKYL SULFOXIDES VIA INTERMOLECULAR PUMMERER REACTION

Redazione
(AGENPARL) – LONDON (UNITED KINGDOM), sab 23 gennaio 2021 Pummerer reaction is a well-known protocol for α-functionalization of alkyl sulfoxides. However, in contrast to the progress in developing intramolecular variants, the development of intermolecular Pummerer-type C-C coupling reactions has lagged with limited successes, which rely heavily on the use of......
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THE H2+ + HD REACTION AT LOW COLLISION ENERGIES: H3+/H2D+ BRANCHING RATIO AND PRODUCT-KINETIC-ENERGY DISTRIBUTIONS

Redazione
(AGENPARL) – LONDON (UNITED KINGDOM), sab 23 gennaio 2021 The fully state-selected reactions between H2+ molecules in the X+ 2Σg+(v+ = 0, N+ = 0) state and HD molecules in the X 1Σg+(v = 0, J = 0) state forming H3+ + D and H2D+ + H have been studied......
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CATALYST OFFERS LOW TEMPERATURE ROUTE TO PRODUCE HYDROGEN

Redazione
(AGENPARL) – CAMBRIDGE (UNITED KINGDOM), sab 23 gennaio 2021 An effective, stable catalyst that works just above room temperature can turn water and carbon monoxide into a stream of pure hydrogen and carbon dioxide.1 The development of a catalyst that works at much lower temperatures could be a boost for......
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EFFICIENT SYNTHESIS OF POLYETHER POLYOLS IN SIMPLE MICROFLUIDIC DEVICES

Redazione
(AGENPARL) – LONDON (UNITED KINGDOM), gio 21 gennaio 2021 Polyether polyols as the crucial chemical for the synthesis of polyurethanes have attracted much attention, especially for propylene oxide-based polyether polyols due to the ready availability and good structural diversity [1]. In the present work, microfluidic devices configured with SIMM-V2 micromixer......
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C–F BOND ACTIVATION OF PERFLUORINATED ARENES USING NHC-STABILIZED COBALT HALF-SANDWICH COMPLEXES

Redazione
(AGENPARL) – LONDON (UNITED KINGDOM), gio 21 gennaio 2021 A study on the reactivity of NHC cobalt half-sandwich complexes [(5-C5R15)Co(R22Im)(η2 C2H4)] (R1 = H; R2 = Me 1, iPr 2) and [(5-C5R15)Co(R22Im)(η2-C2H3(SiMe3)] (R1 = H, R2 = Me 3, iPr 4; R1 = Me, R2 = Me 5, iPr 6)......
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RESTORATION OF CATALYTIC ACTIVITY BY THE PRESERVATION OF LIGAND STRUCTURE: CU-CATALYSED ASYMMETRIC CONJUGATE ADDITION WITH 1,1-DIBORYLMETHANE

Redazione
(AGENPARL) – LONDON (UNITED KINGDOM), gio 21 gennaio 2021 Reported herein is a novel reaction engineering protocol to enhance the efficiency of a transition metal–catalysed process by strategically preventing ligand degradation. Based on spectroscopic investigations, a decomposition pathway of a chiral phosphoramidite ligand during a Cu-catalysed reaction was identified. The......
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SYNTHESIS OF POLYARAMIDS IN γ–VALEROLACTONE-BASED ORGANIC ELECTROLYTE SOLUTIONS

Redazione
(AGENPARL) – LONDON (UNITED KINGDOM), gio 21 gennaio 2021 The current synthetic procedures for polyaramids mainly involve the use of amide solvents such as N-methylpyrrolidone and N,N-dimethylacetamide. However, these solvents are suspected to be teratogenic and are considered ‘Substances of Very High Concern’ by the European Commission. Here we propose......
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FACILE CONSTRUCTION OF N-DOPED CARBON NANOTUBES ENCAPSULATED CO NANOPARTICLES AS A HIGHLY EFFICIENT MULTIFUNCTIONAL CATALYST FOR ELECTROCHEMICAL REACTIONS

Redazione
(AGENPARL) – LONDON (UNITED KINGDOM), gio 21 gennaio 2021 At present, it is critical to rationally design and facilely synthesize high cost-effective multifunctional non-noble metal electrocatalysts for sustainable energy applications. Herein, a facile solid-phase precursor’s pyrolysis method is used to construct N-doped carbon nanotubes encapsulated Co nanoparticles (Co@NCNTs) multifunctional electrocatalyst.......
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ELECTRIC FIELDS FLICK THE QUANTUM-TUNNELLING SWITCH IN COLD REACTIONS

Redazione
(AGENPARL) – CAMBRIDGE (UNITED KINGDOM), mer 20 gennaio 2021 Using quantum chemical calculations, scientists have discovered that external electric fields can drastically alter the kinetics of several chemical reactions below 20K, where quantum tunnelling dominates the reaction pathways. Quantum tunnelling is a phenomenon in which particles can pass through potential......
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REGIOSELECTIVITY AND STEREOSELECTIVITY OF INTRAMOLECULAR [2+2] PHOTOCYCLOADDITION CATALYZED BY CHIRAL THIOXANTHONE: A QUANTUM CHEMICAL STUDY

Redazione
(AGENPARL) – LONDON (UNITED KINGDOM), mar 19 gennaio 2021 Chiral photosensitizer-catalyzed stereoselective olefin cyclization has shown its significance in organic synthesis. In this work, we investigated the reaction mechanism, regioselectivity and stereoselectivy of photochemical intramolecular [2+2] cycloaddition reaction catalyzed by a chiral thioxanthone molecule using quantum chemical calculations. The reaction......

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