Articles with "cleavage bonds" as a keyword



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Effect of Benzyl Functionality on Microwave-Assisted Cleavage of Cα–Cβ Bonds in Lignin Model Compounds

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Published in 2017 at "Journal of Physical Chemistry C"

DOI: 10.1021/acs.jpcc.6b12056

Abstract: The effect of benzylic alcohol (Cα—OH) pretreatments on microwave-assisted cleavage of Cα—Cβ bonds in lignin model compounds was investigated by combining experimental results with density functional theory (DFT) calculations at the M06-2X/6-311++G(d,p) level. The oxidization… read more here.

Keywords: cleavage; model compounds; microwave assisted; model ... See more keywords
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Reductive Cleavage of C-X or N-S Bonds Catalyzed by Super Organoreductant CBZ6.

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Published in 2023 at "Organic letters"

DOI: 10.1021/acs.orglett.2c04346

Abstract: The reductive cleavage of C(Ar)-X bonds is the key step for the cross coupling of Ar-X with other groups. In this work, under the irradiation of 407 nm LEDs using sodium formate as reductant and… read more here.

Keywords: bonds catalyzed; cleavage bonds; super organoreductant; reductive cleavage ... See more keywords
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Oxidative cleavage of β-O-4 bonds in lignin model compounds with a single-atom Co catalyst

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Published in 2019 at "Green Chemistry"

DOI: 10.1039/c9gc00293f

Abstract: Single-atom catalysts are emerging as primary catalysts for many reactions due to their 100% utilization of active metal centers leading to high catalytic efficiencies. read more here.

Keywords: single atom; oxidative cleavage; lignin model; cleavage bonds ... See more keywords
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A metal-free heterogeneous photocatalyst for the selective oxidative cleavage of CC bonds in aryl olefins via harvesting direct solar energy

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Published in 2020 at "Green Chemistry"

DOI: 10.1039/d0gc01187h

Abstract: Selective cleavage of CC bonds is highly important for the synthesis of carbonyl containing fine chemicals and pharmaceuticals. Novel methodologies such as ozonolysis reactions, Lemieux–Johnson oxidation reaction etc. already exist. Parallel to these, catalytic methods… read more here.

Keywords: free heterogeneous; solar energy; direct solar; metal free ... See more keywords
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Acid-catalyzed cleavage of C-C bonds enables atropaldehyde acetals as masked C2 electrophiles for organic synthesis.

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Published in 2021 at "Chemical communications"

DOI: 10.1039/d1cc04000f

Abstract: Acid-catalyzed tandem reactions of atropaldehyde acetals were established for the synthesis of three important molecules, 2,2-disubstituted indolin-3-ones, naphthofurans and stilbenes. The synthesis was realized using novel reaction cascades, which involved the same two initial steps:… read more here.

Keywords: atropaldehyde acetals; acid catalyzed; catalyzed cleavage; cleavage bonds ... See more keywords
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Unveiling the mechanism for selective cleavage of C-C bonds in sugar reactions on tungsten trioxide–based catalysts

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Published in 2022 at "Proceedings of the National Academy of Sciences of the United States of America"

DOI: 10.1073/pnas.2206399119

Abstract: Significance Sugars are carbon-neutral alternatives to fossil resources for the sustainable production of fuels and chemicals. Their direct conversion is challenged by their structural complexities of different chiralities, carbon numbers, and types of ketoses/aldoses and… read more here.

Keywords: bonds sugar; cleavage bonds; selective cleavage; mechanism selective ... See more keywords
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Catalytic Oxidative Cleavage of C(OH)-C Bonds in Lignin Model Compounds to Carboxylic Acids by Fe(NO3)3.9H2O/NaI/DMSO

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Published in 2022 at "Frontiers in Chemistry"

DOI: 10.3389/fchem.2022.933763

Abstract: The secondary C(OH)-C bonds are abundant in biomass such as lignin and cellulose. Thus, selective cleavage of the C(OH)-C bonds into value chemicals attracted much attention. Molecular iodine has received considerable attention as an inexpensive… read more here.

Keywords: 9h2o nai; cleavage bonds; nai dmso; no3 9h2o ... See more keywords