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Alkene Diversification through a Molecular Recasting Strategy Enabled by N-Heterocyclic Carbene and Photoredox Dual Catalysis [PDF]

Research
Alkenes are fundamental structural motifs in organic synthesis, valued for their prevalence in natural products and their broad reactivity profile. While traditional de novo synthesis offers access to diverse alkene frameworks, strategies enabling the ...
Qing-Zhu Li, Mei-Hao He, Peng-Tao Wang, Dong-Yang Xiang, Long-Hai Hong, Rong Zeng, Jun-Long Li   +6 more
doaj   +2 more sources

Synthesis of Six-Membered N-Heterocyclic Carbene Precursors Based on Camphor

Molecules, 2023
The endo- and exo-N-heterocyclic carbene precursors based on camphor were prepared diastereoselectively in five synthetic steps starting from (1S)-(+)-ketopinic acid.
Jan Šegina, Luka Ciber, Helena Brodnik, Franc Požgan, Jurij Svete, Bogdan Štefane, Uroš Grošelj   +6 more
doaj   +1 more source

Bidentate Donor-Functionalized N-Heterocyclic Carbenes: Valuable Ligands for Ruthenium-Catalyzed Transfer Hydrogenation

Molecules, 2022
Ruthenium complexes are by far the most studied compounds that catalyze hydrogen transfer reactions. In this review, we describe the use in this field of ruthenium complexes bearing bidentate donor-functionalized N-heterocyclic carbene ligands.
Vincent Ritleng, Christophe Michon
doaj   +1 more source

Synthesis of Platinum(II) N-Heterocyclic Carbenes Based on Adenosine

Molecules, 2021
Organometallic derivatization of nucleosides is a highly promising strategy for the improvement of the therapeutic profile of nucleosides. Herein, a methodology for the synthesis of metalated adenosine with a deprotected ribose moiety is described ...
Maria Inês P. S. Leitão, Giulia Francescato, Clara S. B. Gomes, Ana Petronilho   +3 more
doaj   +1 more source

[(1,2,5,6-η)-Cycloocta-1,5-diene](4-isopropyl-1-methyl-1,2,4-triazol-5-ylidene)(tricyclohexylphosphane-κP)iridium(I) tetrafluoridoborate dichloromethane monosolvate

IUCrData, 2022
The title compound, [Ir(C8H12)(C6H11N3)(C18H33P)]BF4·CH2Cl2, a triazole-based N-heterocyclic carbene iridium(I) cationic complex with a tetrafluoridoborate counter-anion, crystallizes with one dichloromethane solvent molecule per formula unit.
Joshua Rushlow, Andrei V. Astashkin, Daniel R. Albert, Edward Rajaseelan   +3 more
doaj   +1 more source

Oxidative N‐Heterocyclic Carbene Catalysis

Chemistry – A European Journal, 2022
AbstractN‐Heterocyclic carbene (NHC) catalysis is a by now consolidated organocatalytic platform for a number of synthetic (asymmetric) transformations via diverse reaction modes/intermediates. In addition to the typical umpolung processes involving acyl anion/homoenolate equivalent species, implementation of protocols under oxidative conditions ...
Carmela De Risi, Arianna Brandolese, Graziano Di Carmine, Daniele Ragno, Alessandro Massi, Olga Bortolini   +5 more
openaire   +2 more sources

(4-Benzyl-1-methyl-1,2,4-triazol-5-ylidene)[(1,2,5,6-η)-cycloocta-1,5-diene](triphenylphosphane-κP)iridium(I) tetrafluoridoborate

IUCrData, 2021
A new triazole-based N-heterocyclic carbene iridium(I) cationic complex with a tetrafluoridoborate counter-anion, [Ir(C10H11N3)(C8H12)(C18H15P)]BF4, has been synthesized and structurally characterized.
Elliott B. Newman, Andrei V. Astashkin, Daniel R. Albert, Edward Rajaseelan   +3 more
doaj   +1 more source

N‐Heterocyclic Carbene Organocatalysis: With or Without Carbenes?

Chemistry – A European Journal, 2020
AbstractIn this work the mechanism of the aldehyde umpolung reactions, catalyzed by azolium cations in the presence of bases, was studied through computational methods. Next to the mechanism established by Breslow in the 1950s that takes effect through the formation of a free carbene, we have suggested that these processes can follow a concerted ...
Sascha Gehrke, Oldamur Hollóczki
openaire   +2 more sources

N-Heterocyclic carbene-based gold etchants

Beilstein Journal of Nanotechnology, 2023
N-Heterocyclic carbenes (NHCs) are an emerging alternative to thiols for the formation of stable self-assembled monolayers (SAMs) on gold. We examined several different species that have been used to produce NHC-based monolayers on gold, namely 1,3 ...
Robert B. Chevalier, Justin Pantano, Matthew K. Kiesewetter, Jason R. Dwyer   +3 more
doaj   +1 more source

[(1,2,5,6-η)-Cycloocta-1,5-diene](4-isopropyl-1-methyl-1,2,4-triazol-5-ylidene)(triphenylphosphane)iridium(I) tetrafluoridoborate dichloromethane 0.8-solvate

IUCrData, 2023
A new triazole-based N-heterocyclic carbene iridium(I) cationic complex with a tetrafluoridoborate counter-anion, [Ir(C8H12)(C18H15P)(C6H11N3)]BF4·0.8CH2Cl2, has been synthesized and structurally characterized.
Troy E. Smith, Andrei V. Astashkin, Daniel R. Albert, Edward Rajaseelan   +3 more
doaj   +1 more source