Articles with "copper catalysis" as a keyword



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DFT study on synergetic Ir/Cu-metallaphotoredox catalyzed trifluoromethylation of aryl bromides

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Published in 2020 at "Molecular Catalysis"

DOI: 10.1016/j.mcat.2020.111294

Abstract: Abstract MacMillan et al. recently developed an elegant strategy for trifluoromethylation of aryl halides by merging iridium photoredox catalysis with copper catalysis [Science 360 (2018) 1010–1014]. The present work presents a complementary theoretical study to… read more here.

Keywords: trifluoromethylation; study; catalysis; trifluoromethylation aryl ... See more keywords
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Enantioselective Remote C(sp3)-H Cyanation via Dual Photoredox and Copper Catalysis.

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Published in 2020 at "Organic letters"

DOI: 10.1021/acs.orglett.0c02008

Abstract: The remote C(sp3)-H cyanation of carboxamides has been described by merging photoredox and copper catalysis in a site-selective and enantiocontrolled manner. The protocol is the integration of photoinduced and nitrogen-centered radical-mediated intermolecular hydrogen atom transfer… read more here.

Keywords: remote sp3; copper; cyanation; sp3 cyanation ... See more keywords
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Radical Multicomponent Alkyl Alkynylation of Propellane via Synergistic Photoredox and Copper Catalysis.

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Published in 2022 at "Organic letters"

DOI: 10.1021/acs.orglett.2c01721

Abstract: Bicyclo[1.1.1]pentanes (BCPs) are important bioisosteres of aryl, tert-butyl groups, and internal alkynes that can impact key physicochemical properties on drug candidates. Herein, we describe a novel and efficient reaction to synthesize alkyl-alkynyl-substituted BCP derivatives by… read more here.

Keywords: synergistic photoredox; photoredox copper; copper catalysis; alkyl ... See more keywords
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Selective Three-Component 1,2-Aminoalkoxylation of 1-Aryl-1,3-dienes by Dual Photoredox and Copper Catalysis.

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Published in 2022 at "Organic letters"

DOI: 10.1021/acs.orglett.2c03124

Abstract: A three-component 1,2-aminooxygenation reaction of 1,3-dienes by dual photoredox and copper catalysis is described. This protocol uses N-aminopyridinium salts as N-centered radical precursors and nucleophilic alcohols as oxygen sources, providing modular and practical access to… read more here.

Keywords: dual photoredox; three component; dienes dual; photoredox copper ... See more keywords

Dechalcogenization of Aryl Dichalcogenides to Synthesize Aryl Chalcogenides via Copper Catalysis

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Published in 2020 at "ACS Catalysis"

DOI: 10.1021/acscatal.9b04931

Abstract: An application for dechalcogenization of aryl dichalcogenides via copper catalysis to synthesize aryl chalcogenides is disclosed. This approach is highlighted by the practical conditions, broad sub... read more here.

Keywords: aryl dichalcogenides; catalysis; dechalcogenization aryl; via copper ... See more keywords
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Copper catalysis: ligand-controlled selective N-methylation or N-formylation of amines with CO2 and phenylsilane

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Published in 2018 at "Green Chemistry"

DOI: 10.1039/c8gc02280a

Abstract: Cupric subcarbonate (Cu2(OH)2CO3) was found to be effective for the reductive functionalization of CO2 to produce formamides and methylamines with phenylsilane as reductant. Interestingly, N-formylation and N-methylation were switched on/off by subtly choosing the ligand:… read more here.

Keywords: formylation; methylation; catalysis ligand; ligand controlled ... See more keywords
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Copper catalysis for highly selective aerobic oxidation of alcohols to aldehydes/ketones

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Published in 2019 at "Organic Chemistry Frontiers"

DOI: 10.1039/c9qo00740g

Abstract: A general and practical room temperature aerobic oxidation of different types of alcohols using Cu(NO3)2·3H2O and TEMPO or 4-HO-TEMPO as the catalysts forming aldehydes or ketones with an excellent selectivity has been developed. read more here.

Keywords: catalysis highly; highly selective; aerobic oxidation; copper catalysis ... See more keywords
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Merging strain-release and copper catalysis: the selective ring-opening cross-coupling of 1,2-oxazetidines with boronic acids.

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Published in 2022 at "Chemical communications"

DOI: 10.1039/d2cc00461e

Abstract: An unprecedented ring-opening cross-coupling of 1,2-oxazetidines with readily available arylboronic acids is achieved for the first time by copper catalysis. Unlike the known electrophilic oxygen reactivity in coupling with organometallic reagents, 1,2-oxazetidines were utilized as… read more here.

Keywords: cross coupling; coupling oxazetidines; opening cross; copper catalysis ... See more keywords
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Open-air green-light-driven ATRP enabled by dual photoredox/copper catalysis

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Published in 2022 at "Chemical Science"

DOI: 10.1039/d2sc04210j

Abstract: Photoinduced atom transfer radical polymerization (photo-ATRP) has risen to the forefront of modern polymer chemistry as a powerful tool giving access to well-defined materials with complex architecture. However, most photo-ATRP systems can only generate radicals… read more here.

Keywords: photoredox; dual photoredox; photoredox copper; copper catalysis ... See more keywords