Bisphosphine, process for producing the same, and use thereof

C - Chemistry – Metallurgy – 07 – F

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C07F 9/50 (2006.01) B01J 31/24 (2006.01) C07C 45/49 (2006.01) C07C 45/50 (2006.01) C07C 47/02 (2006.01) C07F 9/6568 (2006.01) C07F 15/00 (2006.01) C07F 15/02 (2006.01)

Patent

CA 2478256

A bisphosphine represented by the general formula (I): (I) (wherein Ar1 and Ar2 each represents arylene; R1 and R2 each represents alkyl or aryl or R1 and R2 may form a ring in cooperation with the phosphorus atom bonded thereto; R3 and R4 each represents hydrogen or alkyl; and the two carbon atoms each having R3 and R4 are bonded in positions ortho to the oxygen atom bonded to Ar1 and Ar2); a process for producing the bisphosphine; a Group VIII metal complex having the bisphosphine as a component; and a process in which an ethylenically unsaturated compound is hydroformylated with carbon monoxide and hydrogen with the aid of the Group VIII metal complex to produce the corresponding aldehyde. The hydroformylation of an ethylenically unsaturated compound can industrially advantageously produce an n-aldehyde at a high reaction rate while inhibiting side reactions such as hydrogenation and isomerization as compared with hydroformylation with existing bisphosphines.

L'invention concerne une bisphosphine représentée par la formule générale (I) dans laquelle Ar?1¿ et Ar?2¿ représentent chacun arylène ; R?1¿ et R?2¿ représentent chacun alkyl ou aryl ou R?1¿ et R?2 ¿peuvent former un cycle en coopération avec l'atome de phosphore qui leur est lié ; R?3¿ et R?4¿ représentent chacun hydrogène ou alkyl ; et, les deux atomes de carbone de R?3¿ et R?4¿ sont liés en position ortho à l'atome d'oxygène lié à Ar?1¿ et Ar?2¿.? ¿L'invention concerne également un procédé de fabrication de bisphosphine, un complexe de métal du groupe VIII contenant la bisphosphine, et un procédé consistant à hydroformyler un composé à insaturation éthylénique avec du monoxyde de carbone et de l'hydrogène à l'aide du complexe de métal du groupe VIII de façon à produire l'aldéhyde correpondant. L'hydroformylation d'un composé à insaturation éthylénique permet de fabriquer industriellement, de façon avantageuse, un n-aldéhyde à une vitesse de réaction élevée, tout en inhibant des réactions parasites telles que l'hydrogénation et l'isomérisation par rapport à l'hydroformylation faisant intervenir des bisphosphines connues.

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