Results 191 to 200 of about 33,950 (227)
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Aryl Diazonium Salts: Powerful Arylating Agents for Catellani-Type ortho-Arylation
The Journal of Organic Chemistry, 2021The Catellani reaction provides an efficient synthetic approach to polyfunctionalized arenes. However, the selective ortho-arylating reagents employed in these reactions have been strictly limited to activated bromoarenes. As demonstrated in this work, aryl diazonium salts bearing both electron-donating and electron-withdrawing substituents, after in ...
Ying Fu, Yu-Xia Zhang, Liang-Liang Guo
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Aryl—Aryl Bond Formation by Transition‐Metal‐Catalyzed Direct Arylation
ChemInform, 2007AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Dino, Alberico +2 more
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Recent advances in aryl–aryl bond formation by direct arylation
Chemical Society Reviews, 2009The abundance of the biaryl structural motif in natural products, in biologically active molecules and in materials chemistry has positioned aryl-aryl (Ar-Ar) bond formation high on the agenda of synthetic chemists. For decades well-known reactions such as the Mizoroki-Heck and Suzuki-Miyaura have been the methods of choice to furnish biaryls.
Gerard P, McGlacken, Lorraine M, Bateman
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N‐Arylation of Diketopyrrolopyrroles with Aryl Triflates
Chemistry – An Asian Journal, 2020AbstractA new methodology for the double N‐arylation of diketopyrrolopyrroles with aryl triflates has been developed. It is now possible to prepare diketopyrrolopyrroles bearing N‐substituents derived from naphthalene, anthracene and coumarin in two steps from commercially available phenols. This represents the first time arenes lacking strong electron‐
Krzysztof Gutkowski +4 more
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Dilithium Aryl Cyanocuprates from Butyl Aryl Tellurides.
ChemInform, 2004AbstractFor Abstract see ChemInform Abstract in Full Text.
Priscila Castelani +2 more
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Arylation of Aldehyde Homoenolates with Aryl Bromides
Organic Letters, 2013A mild palladium catalyzed coupling of reactive aldehyde homoenolates with aryl bromides is described. Aldehyde homoenolates are generated by ring opening of cyclopropanols via a C-C cleavage step. The coupling generates aldehyde products at room temperature in 59-93% yield.
Kevin, Cheng, Patrick J, Walsh
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Aryl–aryl coupling via directed lithiation and oxidation
Chemical Communications, 2005AbstractFor Abstract see ChemInform Abstract in Full Text.
David S, Surry +3 more
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Aryl-Halide versus Aryl−Aryl Reductive Elimination in Pt(IV)−Phosphine Complexes
Journal of the American Chemical Society, 2006Upon the addition of Br2 to complexes (P-P)Pt(Ar)2, two different products were observed, depending on the bite angle of the bidentate phosphine ligand: a Pt(II) aryl bromide complex, the product of C-Br reductive elimination, and Pt(IV) oxidative addition complex.
Anette, Yahav-Levi +2 more
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Diaryliodonium Salts Enabled Arylation, Arylocyclization, and Aryl‐Migration
The Chemical Record, 2023AbstractOur research interest focusing on synthetic methodology with diaryliodonium salts, is summarized in this account. Besides employing a dual activation strategy of C−I and ortho C−H bonds, we have introduced vicinal functional groups at ortho‐positions of diaryliodonium salts, in which their unique reactivities have been explored in various ...
Cheng Pan, Limin Wang, Jianwei Han
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Phosphorus and Sulfur and the Related Elements, 1983
Abstract Aryl alkyl sulphides, easily obtained from aryl halides, can be selectively dealkylated in HMPA by treatment with sodium, sodium methanethiolate or sodium methoxide. The resulting solutions, containing the sodium arenethiolates, when treated with BrCN or ICN, afford the corresponding aryl thiocyanates in moderate to good yields.
L. Testaferri +4 more
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Abstract Aryl alkyl sulphides, easily obtained from aryl halides, can be selectively dealkylated in HMPA by treatment with sodium, sodium methanethiolate or sodium methoxide. The resulting solutions, containing the sodium arenethiolates, when treated with BrCN or ICN, afford the corresponding aryl thiocyanates in moderate to good yields.
L. Testaferri +4 more
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