Photochemical Carboxylation of Activated C(sp3 )-H Bonds with CO2.
Sign Up to like & getrecommendations! Published in 2017 at "ChemSusChem"
DOI: 10.1002/cssc.201700205
Abstract: From ugly duckling to beautiful C1: Although CO2 may represent an ideal C1 source, it is challenging to use it as a raw material and direct carboxylation with CO2 has mainly been confined to highly… read more here.
Keywords: bonds co2; photochemical carboxylation; sp3 bonds; activated sp3 ... See more keywords
Visible-Light-Enabled Carboxylation of Benzyl Alcohol Derivatives with CO2 Using a Palladium/Iridium Dual Catalyst.
Sign Up to like & getrecommendations! Published in 2022 at "ChemSusChem"
DOI: 10.1002/cssc.202200021
Abstract: Invited for this month's cover is the group of Nobuharu Iwasawa at Tokyo Institute of Technology. The image shows a switchable site-selective carboxylation between benzylic C-O and aryl C-Cl moieties enabled by a palladium/iridium dual… read more here.
Keywords: carboxylation; palladium iridium; dual catalyst; visible light ... See more keywords
Copper(0) Nanoparticles Supported on Al2O3 as Catalyst for Carboxylation of Terminal Alkynes
Sign Up to like & getrecommendations! Published in 2017 at "Catalysis Letters"
DOI: 10.1007/s10562-017-2127-0
Abstract: The copper particles, supported on Al2O3 were for the first time used as heterogeneous, highly active, easily available, and recyclable copper catalyst of direct carboxylation of various terminal alkynes with CO2 (2 bar) in the presence… read more here.
Keywords: supported al2o3; terminal alkynes; copper nanoparticles; catalyst ... See more keywords
Sequential protocol for C(sp)–H carboxylation with CO2: KOtBu-catalyzed C(sp)–H silylation and KOtBu-mediated carboxylation
Sign Up to like & getrecommendations! Published in 2018 at "Science China Chemistry"
DOI: 10.1007/s11426-017-9163-2
Abstract: CO2 incorporation into C–H bonds is an important and interesting topic. Herein a sequential protocol for C(sp)–H carboxylation by employing a metal-free C–H activation/catalytic silylation reaction in conjunction with KOtBu-mediated carboxylation with CO2 was established,… read more here.
Keywords: silylation; kotbu; co2; protocol carboxylation ... See more keywords
Transition metal-free carboxylation of terminal alkynes with carbon dioxide through dual activation: Synthesis of propiolic acids
Sign Up to like & getrecommendations! Published in 2019 at "Journal of CO2 Utilization"
DOI: 10.1016/j.jcou.2019.04.011
Abstract: Abstract The combination use of quaternary ammonium salt and inorganic base in low-boiling-point solvent is presented as a new strategy for terminal alkyne carboxylation with CO2. The carboxylation of terminal alkyne with CO2 proceeded smoothly… read more here.
Keywords: transition metal; dual activation; carboxylation; carboxylation terminal ... See more keywords
Valorization of C5 polyols by direct carboxylation to FDCA: Synthesis and characterization of a key intermediate and role of carbon dioxide
Sign Up to like & getrecommendations! Published in 2019 at "Journal of CO2 Utilization"
DOI: 10.1016/j.jcou.2019.04.013
Abstract: Abstract Replacing fossil-C based plastics with those derived from renewable-C is one of the goals of the modern polymer industry. 2,5-Furan dicarboxylic acid (2,5-FDCA) is a candidate to substitute terephthalic acid as comonomer for polyesters.… read more here.
Keywords: role; direct carboxylation; valorization polyols; carboxylation ... See more keywords
Ligand-Promoted Nickel-Catalyzed para-Selective Carboxylation of Anisoles.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c00417
Abstract: It has always been a challenge in free radical chemistry to control site selectivity during the reaction of free radicals with aromatic rings. Herein, we report the site-selective carboxylation of anisoles through the direct reaction… read more here.
Keywords: selective carboxylation; carboxylation; ligand promoted; para selective ... See more keywords
Nickel/Nickel Oxide in Combination with a Photoredox Catalyst for the Reductive Carboxylation of Unsaturated Hydrocarbons with CO2 under Visible-Light Irradiation
Sign Up to like & getrecommendations! Published in 2019 at "ACS Sustainable Chemistry & Engineering"
DOI: 10.1021/acssuschemeng.9b00824
Abstract: Core–shell nickel/nickel oxide combined with ruthenium bipyridyl photoredox complex was found to be adept, reusable, and highly selective for the carboxylation of various aryl and olefinic compounds with carbon dioxide at ambient temperature under 20… read more here.
Keywords: oxide combination; carboxylation; combination photoredox; nickel oxide ... See more keywords
Ni-Catalyzed Carboxylation of Aziridines en Route to β-Amino Acids.
Sign Up to like & getrecommendations! Published in 2021 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.1c01916
Abstract: A Ni-catalyzed reductive carboxylation of N-substituted aziridines with CO2 at atmospheric pressure is disclosed. The protocol is characterized by its mild conditions, experimental ease, and exquisite chemo- and regioselectivity pattern, thus unlocking a new catalytic… read more here.
Keywords: carboxylation aziridines; amino acids; aziridines route; catalyzed carboxylation ... See more keywords
Auto-Tandem Copper-Catalyzed Carboxylation of Undirected Alkenyl C-H Bonds with CO2 by Harnessing β-Hydride Elimination.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.2c10754
Abstract: The exploration into challenging scenarios of the application of elementary reactions offers excellent opportunities for the development of unique transformations under organometallic catalysis. As a ubiquitous reaction of metal alkyl complexes, β-hydride elimination plays a… read more here.
Keywords: copper; carboxylation; hydride elimination; auto tandem ... See more keywords
A scalable carboxylation route to furan-2,5-dicarboxylic acid
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DOI: 10.1039/c7gc01059a
Abstract: Furan-2,5-dicarboxylic acid (FDCA) is a biomass-derived diacid that can be used to make polymers including polyethylene furandicarboxylate (PEF), a highly attractive substitute for petroleum-derived polyethylene terephthalate (PET). Current FDCA syntheses require edible fructose as the… read more here.
Keywords: dicarboxylic acid; fdca; reaction; furan dicarboxylic ... See more keywords