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Wednesday, March 28, 2012

Ligand-free copper-catalyzed coupling of nitroarenes with arylboronic acids


The first example of copper-catalyzed coupling of nitroarenes with arylboronic acids was developed, providing diaryl ethers in moderate to excellent yields. The efficiency of this reaction was demonstrated by compatibility with a wide range of groups. Moreover, the rigorous exclusion of air/moisture is not required in these transformations. Thus, the method represents a simple and facile procedure to access diaryl ethers. Preliminary mechanistic experiments using deuterium labeling showed that the oxygen atom was derived from water.


Graphical abstract: Ligand-free copper-catalyzed coupling of nitroarenes with arylboronic acids

Green Chem., 2012, 14, 912-916

CeO2-catalysed one-pot selective synthesis of esters from nitriles and alcohols

Graphical abstract: CeO2-catalysed one-pot selective synthesis of esters from nitriles and alcohols

Green Chem., 2012, 14, 984-991

Copper-catalyzed highly efficient aerobic oxidative synthesis of imines from alcohols and amines

Graphical abstract: Copper-catalyzed highly efficient aerobic oxidative synthesis of imines from alcohols and amines

A highly efficient and green tandem imine synthesis from alcohol and amine with molecular oxygen as oxidant was achieved by using a remarkable low catalyst-loading, with a commercially available and environmentally benign copper catalyst.

Monday, March 26, 2012

Synthesis and Reactivity of [PdCl2{C,N-C6H4C(═NHXy)NH2-2}] and Neutral Palladium 1,2-Dihydroquinazolinium-4-yl Complexes: Depalladation Reactions - Organometallics (ACS Publications)

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Organometallics, 2012, DOI: 10.1021/om200986k

ipso-Nitration of Arylboronic Acids with Bismuth Nitrate and Perdisulfate

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DOI: 10.1021/ol300325t

Pyridine Ligands as Promoters in PdII/0-Catalyzed C–H Olefination Reactions

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DOI: 10.1021/ol300281p

Pd(II)-Catalyzed Dehydrogenative Olefination of Vinylic C–H Bonds with Allylic Esters: General and Selective Access to Linear 1,3-Butadienes

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DOI: 10.1021/ol300442w 

Transition-Metal-Free Intramolecular N-Arylations

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DOI: 10.1021/ol3005134

N-Tosylcarboxamide as a Transformable Directing Group for Pd-Catalyzed C–H Ortho-Arylation

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DOI: 10.1021/ol3004244

Nickel-catalyzed [4+2] cycloaddition for highly substituted arenes

Graphical abstract: Nickel-catalyzed [4+2] cycloaddition for highly substituted arenes

Chem. Commun., 2012, 48, 3866-3868      

Rhenium-Catalyzed Trifluoromethylation of Arenes and Heteroarenes by Hypervalent Iodine Reagents

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ACS Catal.20122,  521–527 

Stereoselective Synthesis of Enamides by Palladium Catalyzed Coupling of Amides with Electron Deficient Olefins

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ACS Catal., 2012, 2,  539–543.

Regioselective Intramolecular Arylthiolations by Ligand Free Cu and Pd Catalyzed Reaction

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ACS Catal., 2012, 2, 544–551

Saturday, March 24, 2012

Copper-Mediated Difluoromethylation of Aryl and Vinyl Iodides

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Nickel-Catalyzed Negishi Alkylations of Styrenyl Aziridines

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Double-Fold C–H Oxygenation of Arenes Using PyrDipSi: a General and Efficient Traceless/Modifiable Silicon-Tethered Directing Group

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Cationic Iron(III) Porphyrin-Catalyzed [4 + 2] Cycloaddition of Unactivated Aldehydes with Simple Dienes

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C(sp)–C(sp3) Bond Formation through Cu-Catalyzed Cross-Coupling of N-Tosylhydrazones and Trialkylsilylethynes

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Silver-Mediated Oxidative C–H/C–H Functionalization: A Strategy To Construct Polysubstituted Furans

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Palladium-Catalyzed Dehydrogenative β′-Functionalization of β-Keto Esters with Indoles at Room Temperature

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Friday, March 9, 2012

Hydrazone as the Directing Group for Ir-Catalyzed Arene Diborylations and Sequential Functionalizations

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J. Am. Chem. Soc., 2012, DOI: 10.1021/ja300308c

A Comparative Mechanistic Study of Cu-Catalyzed Oxidative Coupling Reactions with N-Phenyltetrahydroisoquinoline

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J. Am. Chem. Soc., 2012, DOI: 10.1021/ja211697s

Reductive Elimination from Arylpalladium Cyanide Complexes

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J. Am. Chem. Soc., 2012, DOI: 10.1021/ja300827t

Asymmetric Synthesis of (Triaryl)methylamines by Rhodium-Catalyzed Addition of Arylboroxines to Cyclic N-Sulfonyl Ketimines

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J. Am. Chem. Soc., 2012, DOI: 10.1021/ja300697c

Fe-Catalyzed Allylic C–C-Bond Activation: Vinylcyclopropanes As Versatile a1,a3,d5-Synthons in Traceless Allylic Substitutions and [3 + 2]-Cycloadditions

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J. Am. Chem. Soc., 2012, DOI: 10.1021/ja300294a

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