LAUSR

Selective cleavage of ether C-O bond in lignin-derived compounds over Ru system under different H-sources

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1 Published in 2021 at "Fuel"

DOI: 10.1016/j.fuel.2020.119027

Abstract: Abstract Selective hydrogenolysis, the aromatic ether C-O bonds under mild conditions, is crucial for the valorization of lignin. In this context, the effects of H2 and solvent on the hydrogenolysis of lignin model compounds over… read more here.

Keywords: system; lignin; bond; cleavage ether ... See more keywords

Selective cleavage of the N-propargyl group from sulfonamides and amides under ruthenium catalysis

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0 Published in 2018 at "Tetrahedron Letters"

DOI: 10.1016/j.tetlet.2018.03.046

Abstract: Abstract The selective cleavage of the N-propargyl group from sulfonamides and amides under ruthenium catalysis is described. The reaction tolerates a broad range of functional groups, and the desired products were obtained in 10–95% yield. read more here.

Keywords: cleavage propargyl; group sulfonamides; propargyl group; sulfonamides amides ... See more keywords

Divergent synthesis of α-functionalized amides through selective N-O/C-C or N-O/C-C/C-N cleavage of aza-cyclobutanone oxime esters.

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1 Published in 2021 at "Chemical communications"

DOI: 10.1039/d1cc03348d

Abstract: Herein, a novel sequential ring opening reaction of aza-cyclobutanone oxime esters with isocyanides is described. The reaction proceeded smoothly under redox-neutral and mild conditions, leading to a divergent synthesis of α-cyanomethylaminoamides, α-acyloxyamides and α-acylaminoamides. In… read more here.

Keywords: divergent synthesis; aza cyclobutanone; cleavage; oxime esters ... See more keywords

Selective Cleavage of Cα−Cβ Bond in Lignin Models by Bifunctional Pyridinium Photocatalyst via PCET Process

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2 Published in 2023 at "Green Chemistry"

DOI: 10.1039/d3gc00432e

Abstract: Cleaving the C−C bonds in lignin to afford value-added low-molecular-weight aromatic products is promising but a challenging project. In this contribution, a mild and efficient strategy for one-step selective C−C... read more here.

Keywords: selective cleavage; models bifunctional; bifunctional pyridinium; bond lignin ... See more keywords

Unveiling the mechanism for selective cleavage of C-C bonds in sugar reactions on tungsten trioxide–based catalysts

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2 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