Results 211 to 220 of about 616,215 (256)
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The dependence of 13C-1H coupling constants on CCC bond angles
Tetrahedron Letters, 1982Abstract The relationship between one-bond 13 C- 1 H coupling constants and internuclear CCC bond angles ( n ) in hydrocarbons of the type R 2 CH 2 is best approximated by a quadratic expression.
Mary W. Baum +3 more
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Pd Nanoclusters in CC Coupling Reactions: Proof of Leaching
Angewandte Chemie International Edition, 2006A simple experiment based on exclusion of Pd nanoclusters was used to identify the true catalytic species in cluster-catalyzed Heck cross-couplings. A special reactor was used in which two compartments are separated by a nanoporous membrane that allows the passage of Pd atoms and ions but not of Pd nanoclusters. The results show that the real catalysts
Thathagar, M. +2 more
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Organic Letters, 2007
A palladium-catalyzed domino intermolecular alkylation/intramolecular amination of functionalized aryl iodides represents a new strategy for the synthesis of benzannulated N-heterocycles, affording functionalized indolines and tetrahydroquinolines from simple precursors.
Praew, Thansandote +3 more
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A palladium-catalyzed domino intermolecular alkylation/intramolecular amination of functionalized aryl iodides represents a new strategy for the synthesis of benzannulated N-heterocycles, affording functionalized indolines and tetrahydroquinolines from simple precursors.
Praew, Thansandote +3 more
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Ditopic Double Pincer Palladacycle Catalyst for C−C Coupling
Inorganic Chemistry, 2004A ditopic palladacycle with SCS pincer coordination, L(PdCl)(2) (1), was isolated and structurally characterized and represents the first example of a transition metal complex with a polythioamide-based macrocycle. Preliminary studies of 1 in the catalytic coupling of 4-iodotoluene and styrene indicated it to be robust in the presence of oxygen and ...
M.D. ALAMGIR HOSSAIN +3 more
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Synthesis of Benzothiadiazole Derivatives by Applying C–C Cross-Couplings
The Journal of Organic Chemistry, 2016The benzothiadiazole moiety has been extensively exploited as a building block in the syntheses of efficient organic semiconducting materials during the past decade. In this paper, parallel synthetic routes to benzothiadiazole derivatives, inspired by previous computational findings, are reported.
Juha P, Heiskanen +7 more
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Chemical & Engineering News Archive, 2014
The revival of a nearly 50-year-old technique for forming carbon-carbon bonds may help ease the synthesis of aryl derivatives, such as drug candidates. Varinder K. Aggarwal and coworkers at the University of Bristol, in England, have taken a venerable but neglected synthesis called Zweifel olefination and made it new again (Nat. Chem.
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The revival of a nearly 50-year-old technique for forming carbon-carbon bonds may help ease the synthesis of aryl derivatives, such as drug candidates. Varinder K. Aggarwal and coworkers at the University of Bristol, in England, have taken a venerable but neglected synthesis called Zweifel olefination and made it new again (Nat. Chem.
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ELECTROCHEMICAL OXIDATIVE C-C COUPLING
2023This work was supported by the Russian Science Foundation, project # 21-13-00205.
Vil’, V. A. +2 more
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Niobium-Centered C−C Coupling of Isonitriles
Organometallics, 1996The complexes [NbI2(CNtBu)6]I (1), [NbI2(CNtBu)4(tBuNHC⋮CNHtBu)]I (2), and cis-[NbI(CO)2(CNR)2dppe] (R = tBu (3a), Cy (3b)), have been prepared by oxidation of [Nb(CO)6]- with iodine in the presence of isonitrile either in a direct reaction (1 and 2) or, in the case of 3, by substitution in the intermediate [NbI(CO)4dppe].
César Collazo +3 more
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On the C-C Coupling of the Naphthylium Ion with Methane
Collection of Czechoslovak Chemical Communications, 2008Unlike other medium-sized hydrocarbon cations CmHn+ (m = 7-11, n = 6-12), the naphthylium ion C10H7+ undergoes a thermal reaction with methane to form the C-C coupled product C11H9+ concomitant with dehydrogenation. This reaction, which might be of relevance in the context of the growth of hydrocarbon species under extreme conditions, is suggested to ...
Jana Roithová +2 more
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Heck and Other C—C Coupling Reactions
ChemInform, 2006AbstractFor Abstract see ChemInform Abstract in Full Text.
Wolfgang A. Herrmann +2 more
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