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A dual photocatalytic sulfonylation‐arylation of electron‐rich alkenes is described. By combining sulfinate salts, (hetero)‐aryl‐bromides and 2,3‐dihydrofuran under Ru and Ni dual catalysis, over 35 examples of aryl‐sulfonylated scaffolds could be obtained in good to excellent yields, under mild reaction conditions and high diastereoselectivity. [ABSTRACT FROM AUTHOR]

A catalytic 1,1‐difunctionalization of unactivated olefins en route to sp3bis‐organometallic B,B(Si)‐reagents is described. The protocol is characterized by exceptional reaction rates, mild conditions, wide scope, and exquisite selectivity pattern, constituting a new platform to access sp3bis‐organometallics. [ABSTRACT FROM AUTHOR]

A modular, site‐selective 1,2‐dicarbofunctionalization of vinyl boronates with organic halides through dual catalysis is described. This reaction proceeds under mild conditions and is characterized by excellent chemo‐ and regioselectivity. It thus represents a complementary new technique for preparing densely functionalized alkyl boron architectures from simple and accessible precursors. [ABSTRACT FROM AUTHOR]

Nickel catalysts have recently played an important role for rapidly and reliably converting feedstock chemicals into valuable compounds of interest for both pharmaceutical and academic laboratories. Herein, we summarize the recent advances on the ability of nickel catalysts to trigger olefin isomerization via "chain‐walking", causing a displacement of the nickel catalyst throughout the alkyl chain while opening up new grounds for forging C−C and C‐heteroatom linkages at remote, yet unfunctionalized, sp3 C−H bonds. [ABSTRACT FROM AUTHOR]

A photoinduced carboxylation of alkyl halides with CO2 at remote sp3 C−H sites enabled by the merger of photoredox and Ni catalysis is described. This protocol features a predictable reactivity and site selectivity that can be modulated by the ligand backbone. Preliminary studies reinforce a rationale based on a dynamic displacement of the catalyst throughout the alkyl side chain. [ABSTRACT FROM AUTHOR]

A nickel-catalyzed reductive carboxylation technique for the synthesis of cyclopropanecarboxylic acids has been developed. This user-friendly and mild transformation operates at atmospheric pressure of carbon dioxide and utilizes either organic halides or alkene precursors, thus representing the first example of catalytic reductive carboxylation of secondary counterparts lacking adjacent π-components. [ABSTRACT FROM AUTHOR]

The first catalytic intermolecular proximal C1C2 cleavage of benzocyclobutenones (BCB) without prior carbonyl activation or employing noble metals has been developed. This protocol operates at room temperature and is characterized by an exquisite chemo-, regio- and diastereoselectivity profile, constituting a unique platform for preparing an array of elusive carbocyclic skeletons. [ABSTRACT FROM AUTHOR]

A tandem C(sp2)H and C(sp3)H functionalization/CO bond formation catalyzed by iodine(III) reagents generated in situ has been developed. The method shows wide scope under mild conditions and exhibits an unprecedented selectivity profile that can be switched depending on the catalyst employed. [ABSTRACT FROM AUTHOR]

A carboacylation of iodoalkyl olefins with carbon monoxide provides 5- to 7-membered cyclic compounds under mild reaction conditions. [ABSTRACT FROM AUTHOR]

The article discusses the results of initial studies on the development of a palladium-catalyzed Kumada-Corriu cross-coupling process that can be performed at temperatures ranging from -20 to -65°C and that tolerates the presence of a wide variety of functional groups, in either coupling partner. The authors examine the effects of palladium precatalyst, solvent, temperature and ligand. They note that a catalyst using ligand L3 provided the best results in toluene.

This article focuses on the iron (Fe)-catalyzed cross-coupling reactions of organomagnesium reagents with various electrophiles, which were guided by the hypothesis that bare, low-valent iron clusters formed in situ from Fe and excess magnesium. Since the unambiguous characterization of such highly reactive species is problematic, the ongoing mechanistic studies rely on the use of the Fe complexes as adequate surrogates. These structurally well-defined compounds comprise very electron-rich metal centers within a coordination sphere of weakly bound alkene ligands.

The article presents chemical equations related to the article "Ni-Catalyzed Direct Reductive Amidation via C?O Bond Cleavage" by A. Correa and others, published in the periodical "Journal of the American Chemical Society" in 2014.

Advantages of the title method are mild conditions, robustness, and wide substrate scope allowing the coupling of Csp2-O and even Csp3-O bonds with similar efficiency. [ABSTRACT FROM AUTHOR]

The Ni-catalyzed direct C-O arylation of 2,3-dihydrofurans with Grignard reagents proceeds with high chemo- and E/Z-selectivity to produce Z-configured homoallylic alcohols. [ABSTRACT FROM AUTHOR]

The article presents chemical equations related to mild C(sp²)-H functionalization mediated by carboxylic acids resulting in the formation of hydroxylated arenes using copper (Cu) as catalyst that was published in a 2013 issue of the "Journal of the American Chemical Society."

A mild and user-friendly Ni-catalyzed regioselective hydrocarboxylation of alkynes with CO2 (1 bar) is described. This protocol is characterized by a wide scope while obviating the need for sensitive organometallic species and by an unprecedented regioselectivity pattern using simple alcohols as proton sources. [ABSTRACT FROM AUTHOR]

An user-friendly Ni-catalyzed reductive carboxylation of benzylic C-N bonds with CO2 is described. [ABSTRACT FROM AUTHOR]

A novel practical Ni-catalyzed hydrocarboxylation of internal alkynes with CO2 using cheap alcohols as proton source is presented. [ABSTRACT FROM AUTHOR]

An efficient procedure is elaborated for the Ni-catalyzed ipso-borylation of methyl ethers (I) and (IV). [ABSTRACT FROM AUTHOR]

The syn/anti selectivity pattern is dictated by a suitable substrate and/or ligand selection. [ABSTRACT FROM AUTHOR]

The asymmetric C-C bond forming reaction utilizes aryl esters as C-O electrophiles and in situ generated prochiral ketone enolates. [ABSTRACT FROM AUTHOR]

Products (III) and (VI) are obtained with E:Z ratios ≥ 9:1. [ABSTRACT FROM AUTHOR]

The article presents a diagram which shows the molecular structure of the selectivity switch of mild ArI-catalyzed C(sp²)-H or C(sp³)-H functionalization/C-O formation.

The synthetic utility of this mild method is demonstrated in the synthesis of phenoxybutyric herbicide MCPB (VII). [ABSTRACT FROM AUTHOR]

Review: [68 refs. [ABSTRACT FROM AUTHOR]

An abstract of the article "Ni-Catalyzed Carboxylation of C(sp2)— and C(sp3)—O Bonds with CO2" by Arkaitz Correa, Thierry Leon and collegues is presented.

The article presents chemical equations for the regiodivergent [1,2]-shift of α-Aryl Aldehydes using iron as catalysts, which was published in a 2013 issue of the periodical "Journal of the American Chemical Society."

The presented method allows for the coupling of tert-cyclobutanols, such as (I) and (VI) with bromoacetylenes, giving access to versatile alkynes (III) and (VIII), respectively. [ABSTRACT FROM AUTHOR]

The article presents information on carboxylation of benzyl halides.

The article discusses the Palladium (Pd)-catalyzed intramolecular acylation of aryl bromides using C-H bond functionalization as a strategy for synthesizing benzocyclobutenones (BCBs). It explores the method of the study which involved the use of model substrate and a variety of experimental variables and optimization as well as the synthetic applicability of the resulting BCBs. Also mentioned are the mechanisms manifested by the results and the successful development of the new protocol.

Review: 105 refs. [ABSTRACT FROM AUTHOR]

The scalable borylation of unactivated aryl fluorides using bis(neopentyl glycolato)diboron has a very broad substrate scope, thus tolerating sterically hindered compounds, nitrogen-containing heterocycles as well as steroids, and multiple functional groups such as esters, amides, silyl ethers, acetals and pinacolates, but no nitriles, thioethers and chlorides. [ABSTRACT FROM AUTHOR]