Articles with "carbene transfer" as a keyword



Organic solvent stability and long‐term storage of myoglobin‐based carbene transfer biocatalysts

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Published in 2020 at "Biotechnology and Applied Biochemistry"

DOI: 10.1002/bab.1972

Abstract: Recent years have witnessed a rapid increase in the application of enzymes for chemical synthesis and manufacturing, including the industrial‐scale synthesis of pharmaceuticals using multienzyme processes. From an operational standpoint, these bioprocesses often require robust… read more here.

Keywords: carbene transfer; carbene; myoglobin based; stability ... See more keywords

Enabling Cyclopropanation Reactions of Imidazole Heterocycles via Chemoselective Photochemical Carbene Transfer Reactions of NHC-Boranes.

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Published in 2022 at "Organic letters"

DOI: 10.1021/acs.orglett.2c00609

Abstract: Herein we report a site-selective cyclopropanation of N-heterocyclic carbene (NHC)-borane complexes via photochemical carbene transfer reactions. By subtle changes to the reaction conditions, this approach can be further extended toward the difunctionalization of NHC-boranes via… read more here.

Keywords: carbene transfer; transfer reactions; photochemical carbene; cyclopropanation ... See more keywords

Photochemical Carbene-Transfer Reaction of Vinyldiazo Compounds: Synthesis of 1-Pyrrolines via Methylenation/[2+3] Annulation.

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Published in 2025 at "Organic letters"

DOI: 10.1021/acs.orglett.5c04229

Abstract: Herein, we report a new class of vinyldiazo compounds called bromo-diazoenals that effectively suppress the inherent 2π-electrocyclization typically observed in vinyldiazo compounds under photochemical conditions. Upon irradiation with visible light, these Br-diazoenal compounds generate singlet… read more here.

Keywords: annulation; vinyldiazo compounds; carbene transfer; carbene ... See more keywords

Bridging and axial carbene binding modes in cobalt corrole complexes: effect on carbene transfer.

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Published in 2020 at "Chemical communications"

DOI: 10.1039/d0cc07073d

Abstract: Catalytically relevant intermediates in carbene transfer reactions from a diazo precursor were investigated using cobalt corrole complexes. Two divergent mechanisms are proposed depending on the oxidation state of the cobalt center. Mechanistically driven factors for… read more here.

Keywords: cobalt corrole; carbene transfer; carbene; corrole complexes ... See more keywords

Iron catalysts with N-ligands for carbene transfer of diazo reagents.

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Published in 2020 at "Chemical Society reviews"

DOI: 10.1039/d0cs00221f

Abstract: Transition-metal-catalyzed carbene transfer reactions, involving diazo compounds and their precursors, are powerful tools for creating new C-C bonds. Depending on the involved catalytic system, the carbene insertion can efficiently be driven towards a specific functional… read more here.

Keywords: iron catalysts; carbene transfer; diazo; catalysts ligands ... See more keywords

Highly electrophilic silver carbenes.

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Published in 2022 at "Chemical communications"

DOI: 10.1039/d2cc04845k

Abstract: Catalytic carbene transfer reactions are fundamental transformations in modern organic synthesis, which enable direct access to diverse structurally complex molecules. Despite diazo precursors playing a crucial role in catalytic carbene transfer reactions, most reported methodologies… read more here.

Keywords: carbene transfer; silver carbenes; silver; highly electrophilic ... See more keywords

Graphene oxide catalysed carbene transfer reaction in water: A highly green and selective approach to access 3,3’,3’’-trisindoles

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Published in 2024 at "Green Chemistry"

DOI: 10.1039/d3gc03966h

Abstract: The insertion or transfer of carbene using diazo compounds as a precursor is being used widely to synthesize/functionalize different classes of organic compounds. While different types of catalysts like transition... read more here.

Keywords: oxide catalysed; graphene oxide; carbene transfer; catalysed carbene ... See more keywords

Photoinduced carbene transfer for copper-catalyzed asymmetric [4+1] cycloadditions: an entry to chiral indolines bearing quaternary stereocenters

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Published in 2023 at "Organic Chemistry Frontiers"

DOI: 10.1039/d3qo00551h

Abstract: Indoline skeletons are widely found in many natural isolates and pharmaceuticals, making indoline synthesis an ongoing research hotspot in synthetic chemistry. However, the catalytic asymmetric de novo construction of indolines... read more here.

Keywords: carbene transfer; chemistry; catalyzed asymmetric; transfer copper ... See more keywords