157788-40-4Relevant academic research and scientific papers
Photocatalyzed Transition-Metal-Free Oxidative Cross-Coupling Reactions of Tetraorganoborates**
Music, Arif,Baumann, Andreas N.,Boser, Florian,Müller, Nicolas,Matz, Florian,Jagau, Thomas C.,Didier, Dorian
supporting information, p. 4322 - 4326 (2021/02/11)
Readily accessible tetraorganoborate salts undergo selective coupling reactions under blue light irradiation in the presence of catalytic amounts of transition-metal-free acridinium photocatalysts to furnish unsymmetrical biaryls, heterobiaryls and arylated olefins. This represents an interesting conceptual approach to forge C?C bonds between aryl, heteroaryl and alkenyl groups under smooth photochemical conditions. Computational studies were conducted to investigate the mechanism of the transformation.
Practical Ni-Catalyzed Cross-Coupling of Unsaturated Zinc Pivalates with Unsaturated Nonaflates and Triflates
Hofmayer, Maximilian S.,Lutter, Ferdinand H.,Grokenberger, Lucie,Hammann, Jeffrey M.,Knochel, Paul
, p. 36 - 39 (2019/01/04)
A practical nickel-catalyzed cross-coupling of (hetero)aryl or alkynylzinc pivalates with various unsaturated nonaflates or triflates is described. Organozinc pivalates allow these cross-couplings to take place with high yields and a low catalyst loading (0.5 mol %). Couplings with (E)- and (Z)-alkenyl triflates proceed with retention of configuration.
Bicyclic Heteroaromatic Compounds
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Page/Page column 7, (2008/06/13)
A compound of formula (I) wherein the various groups are defined herein. or a pharmaceutically acceptable salt thereof. These compounds are useful for treating atherosclerosis and other inflammatory diseases.
Bicyclic Heteroaromatic Compounds
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Page/Page column 7, (2008/06/13)
A compound of formula (I) wherein: R1 is an aryl group, unsubstituted or substituted by 1, 2, 3 or 4 substituents which may be the same or different selected from the group consisting of C1-C6 alkyl, C1-C6
Microwave-assisted Suzuki coupling reactions with an encapsulated palladium catalyst for batch and continuous-flow transformations
Baxendale, Ian R.,Griffiths-Jones, Charlotte M.,Ley, Steven V.,Tranmer, Geoffrey K.
, p. 4407 - 4416 (2008/02/07)
This article describes the design, optimisation and development of a Suzuki cross-coupling protocol mediated by an efficient palladium-en-capsulated catalyst (Pd EnCat) under microwave irradiation. The methodology has been used in both batch mode for classical library preparation and in continuous-flow applications furnishing multigram quantities of material. Described is a method that uses direct focused microwave heating whilst applying an external cooling source. This enables a lower than normal bulk temperature to be maintained throughout the reaction period leading to significant improvements in the overall yield and purity of the reaction products. Additional aspects of this novel heating protocol are discussed in relation to the prolonged lifetime and enhanced reactivity of the immobilised catalyst system.
