Mechanistic Insights into Manganese (I)‐Catalyzed Chemoselective Hydroarylations of Alkynes: A Theoretical Study
Sign Up to like & getrecommendations! Published in 2018 at "ChemCatChem"
DOI: 10.1002/cctc.201801301
Abstract: Density functional theory calculations were employed to elucidate the mechanism of Mn‐catalyzed chemoselective hydroarylation reactions. The Mn‐catalyzed [4+2] annulation undergoes a reaction pathway involving sequential imine‐directed C−H bond cleavage, alkyne insertion into the Mn−C bond,… read more here.
Keywords: catalyzed chemoselective; manganese catalyzed; study; alkyne insertion ... See more keywords
Heterogeneous Manganese‐Catalyzed Oxidase C−H/C−O Cyclization to Access Pharmaceutically Active Compounds
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DOI: 10.1002/cctc.201901659
Abstract: Heterogeneous manganese‐catalyzed C−H oxidative couplings were accomplished to gain access to pharmaceutically relevant 2‐aminophenoxazin‐3‐ones and to diaminophenazine and purpurogallin moieties in excellent yields. The user‐friendly K‐OMS‐2 oxidase strategy proved to be more versatile and robust… read more here.
Keywords: access pharmaceutically; heterogeneous manganese; oxidase cyclization; manganese catalyzed ... See more keywords
Manganese catalyzed transfer hydrogenation of biomass-derived aldehydes: Insights to the catalytic performance and mechanism
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DOI: 10.1016/j.jcat.2020.05.037
Abstract: Abstract Manganese catalyzed transfer hydrogenation (CTH) of aldehydes is an attractive method for the synthesis of alcohols. Here, we report a novel and efficient MnO@C-N catalyst for the CTH of biomass-derived 5-hydroxymethylfurfural and other aldehydes… read more here.
Keywords: manganese catalyzed; transfer hydrogenation; biomass derived; transfer ... See more keywords
Manganese catalyzed dehydrogenative silylation of alkenes: Direct access to allylsilanes
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DOI: 10.1016/j.tetlet.2020.152053
Abstract: Abstract Dehydrogenative silylation of alkenes with silanes to produce allylsilanes is achieved through manganese catalysis with a wide scope of substrate tolerance. This transformation involves silane radicals initiated by manganese complex without additional oxidant additives.… read more here.
Keywords: alkenes direct; catalyzed dehydrogenative; silylation alkenes; manganese catalyzed ... See more keywords
Manganese-Catalyzed Chemoselective Hydrosilylation of Nitroarenes: Sustainable Route to Aromatic Amines.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c03576
Abstract: Herein we report efficient catalytic hydrosilylations of nitroarenes to form the corresponding aromatic amines using a well-defined manganese(II)-NNO pincer complex with a low catalyst loading (1 mol %) under solvent-free conditions. This base-metal-catalyzed hydrosilylation is… read more here.
Keywords: manganese catalyzed; aromatic amines; hydrosilylation nitroarenes; catalyzed chemoselective ... See more keywords
Manganese(I)-Catalyzed Asymmetric Hydrophosphination of α,β-Unsaturated Carbonyl Derivatives
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DOI: 10.1021/acs.orglett.2c04256
Abstract: Here we report catalytic asymmetric hydrophosphination of α,β-unsaturated carbonyl derivatives using a chiral Mn(I) complex as a catalyst. Through H–P bond activation, various phosphine-containing chiral products can be accessed via hydrophosphination of various ketone-, ester-,… read more here.
Keywords: manganese catalyzed; unsaturated carbonyl; asymmetric hydrophosphination; hydrophosphination ... See more keywords
Preparation of Benzo[c]carbazol-6-amines via Manganese-Catalyzed Enaminylation of 1-(Pyrimidin-2-yl)-1H-indoles with Ketenimines and Subsequent Oxidative Cyclization.
Sign Up to like & getrecommendations! Published in 2018 at "Organic letters"
DOI: 10.1021/acs.orglett.8b00204
Abstract: Manganese-catalyzed C2-H enaminylation of 1-(pyrimidin-2-yl)-1H-indoles with ketenimines is reported. The reaction provided 2-enaminylated indole derivatives in moderate to excellent yields with a broad substrate scope. A migration of the directing group pyrimidinyl occurred during this… read more here.
Keywords: enaminylation pyrimidin; benzo carbazol; indoles ketenimines; manganese catalyzed ... See more keywords
Manganese-Catalyzed ortho-C-H Amidation of Weakly Coordinating Aromatic Ketones.
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DOI: 10.1021/acs.orglett.8b01770
Abstract: An efficient manganese-catalyzed ortho-C-H amidation of weakly coordinating aromatic ketones using the readily available sulfonyl azide as the amination reagent is developed. The key step is the ketone directed aromatic metalation using the in situ… read more here.
Keywords: catalyzed ortho; coordinating aromatic; weakly coordinating; manganese catalyzed ... See more keywords
Manganese-Catalyzed Electrochemical Deconstructive Chlorination of Cycloalkanols via Alkoxy Radicals
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DOI: 10.1021/acs.orglett.9b03652
Abstract: A manganese-catalyzed electrochemical deconstructive chlorination of cycloalkanols has been developed. This electrochemical method provides access to alkoxy radicals from alcohols and exhibits a broad substrate scope, with various cyclopropanols and cyclobutanols converted into synthetically useful… read more here.
Keywords: alkoxy radicals; deconstructive chlorination; manganese catalyzed; catalyzed electrochemical ... See more keywords
Manganese-Catalyzed Sequential Hydrogenation of CO2 to Methanol via Formamide
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DOI: 10.1021/acscatal.7b02066
Abstract: Mn(I)-PNP pincer catalyzed sequential one-pot homogeneous CO2 hydrogenation to CH3OH by molecular H2 is demonstrated. The hydrogenation consists of two parts—N-formylation of an amine utilizing CO2 and H2, and subsequent formamide reduction to CH3OH, regenerating… read more here.
Keywords: sequential hydrogenation; hydrogenation co2; hydrogenation; manganese catalyzed ... See more keywords
Manganese-Catalyzed and Base-Switchable Synthesis of Amines or Imines via Borrowing Hydrogen or Dehydrogenative Condensation
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DOI: 10.1021/acscatal.8b02530
Abstract: The use of earth-abundant transition metals as a noble metal replacement in catalysis is especially interesting if different catalytic reactivity is observed. We report, here, on the selective manganese-catalyzed base-switchable synthesis of N-alkylated amines or… read more here.
Keywords: hydrogen; manganese catalyzed; base switchable; base ... See more keywords