C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/279.7
C07D 213/22 (2006.01)
Patent
CA 2008014
A process for the preparation of 2,2'-bipyridyls by reacting a pyridine base in the presence of a nickel catalyst which comprises a significant amount of elemental nickel bound on a suitable support. The coupling reaction takes place in several reactor designs at a temperature of about 200-240°C and a pressure sufficient to maintain at least some of the base in a liquid state during the reaction.
Méthode de préparation de 2,2'-bipyridyles par réaction d'une base de type pyridine, en présence d'un catalyseur au nickel, renfermant une quantité importante de nickel élémentaire lié à un support approprié. La réaction de couplage s'effectue dans plusieurs réacteurs, à une température d'environ 200-240 degrés C et à une pression suffisante pour maintenir au moins une partie de la base à l'état liquide pendant la réaction.
Goe Gerald L.
Mcgill Charles K.
Sherman Angela Rappa
Smart & Biggar
Syngenta Limited
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