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Tuesday, July 31, 2012

Copper-catalyzed decarboxylative alkenylation of sp3 C–H bonds with cinnamic acids via a radical process

Graphical abstract: Copper-catalyzed decarboxylative alkenylation of sp3 C–H bonds with cinnamic acids via a radical process

Carboxylates as sources of carbon nucleophiles and electrophiles: comparison of decarboxylative and decarbonylative pathways

Graphical abstract: Carboxylates as sources of carbon nucleophiles and electrophiles: comparison of decarboxylative and decarbonylative pathways


Fused Benzo[b]fluorenols: Palladium-Catalyzed Intramolecular Dehydroaromatization and Carbonyl Reduction

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Iron-Catalyzed Alkyl–Alkyl Suzuki–Miyaura Coupling

Synthesis of unsymmetrical biaryl ethers through nickel-promoted coupling of polyfluoroarenes with arylboronic acids and oxygen

Graphical abstract: Synthesis of unsymmetrical biaryl ethers through nickel-promoted coupling of polyfluoroarenes with arylboronic acids and oxygen

Indium(III)-Promoted Organocatalytic Enantioselective α-Alkylation of Aldehydes with Benzylic and Benzhydrylic Alcohols

Wednesday, July 25, 2012

Microwave-assisted palladium mediated decarbonylation reaction: synthesis of eulatachromene


Microwave-assisted decarbonylation reactions were investigated using a palladium catalyst. A large number of aldehydes can be decarbonylated efficiently with lower catalyst loadings and under shorter reaction times compared to conventional heating. A successful decarbonylation led to the synthesis of natural product eulatachromene in three steps starting from easily available materials.


Graphical abstract: Microwave-assisted palladium mediated decarbonylation reaction: synthesis of eulatachromene


Highly regioselective synthesis of aryl chalcogenides through C–H functionalization of arenes

We report here the regioselective synthesis of aryl chalcogenides through the iridium-catalyzedmeta C–H borylation followed by copper-catalyzed C–S coupling reaction with chalcogenide sources in one pot, giving the 3,5-disubstituted aryl chalcogenides with high regioselectivity and good yields.

Graphical abstract: Highly regioselective synthesis of aryl chalcogenides through C–H functionalization of arenes


An efficient copper-catalyzed formation of highly substituted pyrazoles using molecular oxygen as the oxidant

An efficient Cu-catalyzed formation of tetra-substituted pyrazoles is reported. In this atom economic process, readily available enamines and nitriles are reacted by C–C and N–N bond formation. Oxygen has been successfully used as the oxidant, which has important economic and environmental advantages. A broad scope of enamines and nitriles can be utilized in this process.

Graphical abstract: An efficient copper-catalyzed formation of highly substituted pyrazoles using molecular oxygen as the oxidant




TBHP/I2-promoted oxidative coupling of acetophenones with amines at room temperature under metal-free and solvent-free conditions for the synthesis of α-ketoamides

A novel and efficient TBHP/I2-promoted oxidative coupling reaction of acetophenones with amines for the synthesis of α-ketoamides has been developed. The reactions proceeded smoothly at room temperature under metal-free and solvent-free conditions and generated the corresponding products in good yields.


Graphical abstract: TBHP/I2-promoted oxidative coupling of acetophenones with amines at room temperature under metal-free and solvent-free conditions for the synthesis of α-ketoamides

A simple and facile Heck-type arylation of alkenes with diaryliodonium salts using magnetically recoverable Pd-catalyst


The Heck-type arylation of alkenes was achieved in aqueous polyethylene glycol using a magnetically recoverable heterogenized palladium catalyst employing diaryliodonium salts under ambient conditions. The benign reaction medium and the stability of the catalyst are the salient features of this simple and facile protocol.


Graphical abstract: A simple and facile Heck-type arylation of alkenes with diaryliodonium salts using magnetically recoverable Pd-catalyst


Saturday, July 21, 2012

Superacid-catalyzed Friedel–Crafts cyclization of unactivated alkenes

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Direct arylation of benzoxazole C–H bonds with iodobenzene diacetates

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Brønsted Acid Enhanced Rhodium-Catalyzed Conjugate Addition of Aryl C[BOND]H Bonds to α,β-Unsaturated Ketones under Mild Conditions


DOI: 10.1002/chem.201201348

Iron-Catalyzed, Highly Regioselective Synthesis of α-Aryl Carboxylic Acids from Styrene Derivatives and CO2

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DOI: 10.1021/ja3045053

Copper-Catalyzed Aerobic Aliphatic C–H Oxygenation Directed by an Amidine Moiety

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DOI: 10.1021/ja305833a


Pd(II)-Catalyzed Ortho Trifluoromethylation of Arenes and Insights into the Coordination Mode of Acidic Amide Directing Groups

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DOI: 10.1021/ja305259n

Regioselective Double Hydrophosphination of Terminal Arylacetylenes Catalyzed by an Iron Complex

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DOI: 10.1021/ja304818c

Connecting Binuclear Pd(III) and Mononuclear Pd(IV) Chemistry by Pd–Pd Bond Cleavage

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DOI: 10.1021/ja304401u

Metal-Free Oxidative Trifluoromethylthiolation of Terminal Alkynes with CF3SiMe3 and Elemental Sulfur

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DOI: 10.1021/ja305801m

Continuous-Flow Synthesis of Monoarylated Acetaldehydes Using Aryldiazonium Salts

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DOI: 10.1021/ja305660a

Iridium-Catalyzed Borylation of Secondary C–H Bonds in Cyclic Ethers

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DOI: 10.1021/ja305596v

Sunday, July 15, 2012

Cooperative Catalysis Approach to Intramolecular Hydroacylation

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DOI: 10.1021/jo300779q

Ruthenium(II)-Catalyzed sp3 C–H Bond Arylation of Benzylic Amines Using Aryl Halides

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DOI: 10.1021/ol301680v

Copper-Mediated Selective Cyanation of Indoles and 2-Phenylpyridines with Ammonium Iodide and DMF

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DOI: 10.1021/ol301674m

Copper(II)-Mediated Dehydrogenative Cross-Coupling of Heteroarenes

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DOI: 10.1021/ol301517y

Palladium-Catalyzed, Asymmetric Mizoroki–Heck Reaction of Benzylic Electrophiles Using Phosphoramidites as Chiral Ligands

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DOI: 10.1021/ja304099j

Iron-Catalyzed, Highly Regioselective Synthesis of α-Aryl Carboxylic Acids from Styrene Derivatives and CO2

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DOI: 10.1021/ja3045053

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