Synthesis of and hydroformylation with fluoro-substituted...

Details Synthesis of and hydroformylation with fluoro-substituted... Synthesis of and hydroformylation with fluoro-substituted...

C - Chemistry, Metallurgy

07

F

C07F 9/50 (2006.01) B01J 31/24 (2006.01) C07C 45/50 (2006.01) C07C 47/02 (2006.01) C07C 51/373 (2006.01) C07C 59/225 (2006.01) C07C 67/347 (2006.01) C07F 9/46 (2006.01)

Patent

CA 2219990

Hydroformylation of alkenes to aldehydes in the presence of a rhodium complex catalyst is improved by the addition of a novel bidentate ligand of formula (I) wherein R1, R2, R1' and R2' are organic radicals selected from alicyclic, aliphatic and aromatic groups of which at least one is preferably substituted with at least one electronegative moiety and the methylene groups are present at the trans-2,3 positions on the norbornane moiety. The invention also provides a novel method for producing the bidentate ligand and novel intermediate phosphine oxide and phosphinous acid compounds.

On améliore l'hydroformylation d'alcènes en aldéhydes en présence d'un catalyseur complexe au rhodium par l'addition d'un nouveau ligand bidenté représenté par la formule (I) dans laquelle R¿1?, R¿2?, R¿1?' et R¿2?' représentent des radicaux organiques sélectionnés dans des groupes alicycliques, aliphatiques et aromatiques, dont au moins un est, de préférence, substitué par au moins une fraction électronégative, et les groupes méthylène sont présents aux positions trans-2,3 sur la fraction de norborane. L'invention concerne également un nouveau procédé de préparation du ligand bidenté, d'un nouvel oxyde de phosphine intermédiaire et de composés d'acide de phosphine.

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