Transition-metal-catalyzed carbon-nitrogen and carbon-carbon...

B - Operations – Transporting – 01 – J

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B01J 31/16 (2006.01)

Patent

CA 2594307

One aspect of the present invention relates to ligands for transition metals. A second aspect of the present invention relates to the use of catalysts comprising these ligands in various transition-metal-catalyzed carbon- heteroatom and carbon-carbon bond- forming reactions. The subject methods provide improvements in many features of the transition-metal-catalyzed reactions, including the range of suitable substrates, number of catalyst turnovers, reaction conditions, and efficiency. For example, improvements have been realized in transition metal-catalyzed: aryl amination reactions; aryl amidation reactions; Suzuki couplings; and Sonogashira couplings. In certain embodiments, the invention relates to catalysts and methods of using them that operate in aqueous solvent systems.

Dans un aspect, l'invention a trait à des ligands destinés à des métaux de transition. Dans un second aspect, l'invention se rapporte à l'utilisation de catalyseurs contenant lesdits ligands dans diverses réactions de formation de liaisons carbone-hétéroatome et carbone-carbone catalysées par métaux de transition. Les procédés selon l'invention permettent d'améliorer de nombreuses caractéristiques des réactions catalysées par métaux de transition, notamment la gamme de substrats adéquats, le nombre de renouvellements de catalyseurs, les conditions de la réaction et l'efficacité. Par exemple, des améliorations ont été obtenues dans des réactions d'arylamination, des réactions d'arylamidation, des couplages de Suzuki et des couplages de Sonogashira, les réactions et couplages étant catalysés par métaux de transition. Dans certains modes de réalisation, l'invention concerne des catalyseurs et des procédés d'utilisation de ces derniers, qui fonctionnent dans des systèmes de solvants aqueux.

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