Hydroformylation process using novel phosphine-rhodium...

C - Chemistry – Metallurgy – 07 – F

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C07F 9/6568 (2006.01) B01J 31/24 (2006.01) B01J 31/28 (2006.01) C07C 45/50 (2006.01) C07C 47/02 (2006.01) C07C 47/19 (2006.01) C07C 67/38 (2006.01) C07C 69/14 (2006.01) C07F 15/00 (2006.01)

Patent

CA 2124525

Disclosed are bis-phosphine compounds having the general formula (see fig. I) wherein: each of A1, A2, A3 and A4 is an arylene radical wherein (i) each phosphorus atom P is bonded to a ring carbon atom of A1 and A2 and to a ring carbon atom of A3 and A4, (ii) A1 and A2, and A3 and A4 are bonded to each other by ring carbon atoms and (iii) each of the residues (see fig. II) and (see fig. III) constitutes a 5-membered ring; each of A5 and A6 is an arylene radical wherein A5 and A6 are bonded to each other and to residues R1-C-R2 and R3-C-R4 by ring carbon atoms and R1-C-R2 and R3-C-R4 are connected to each other through a chain of 4 carbon atoms; and R1, R2, R3 and R4 each represents hydrogen or a hydrocarbyl radical containing up to about 8 carbon atoms. Also disclosed are catalyst systems comprising one or more of the above phosphine compounds and rhodium, catalyst solutions comprising one or more the above phosphine compounds, rhodium and a hydroformylation solvent, and hydroformylation processes wherein olefins are contacted with carbon monoxide, hydrogen and the catalyst solution to produce aldehydes.

On divulgue des composés de bis-phosphine de formule générale (voir fig. I) où : A1, A2, A3 et A4 sont chacun un radical arylène où (i) chaque atome de phosphore P est lié à un atome de carbone du noyau de A1 et de A2 et à un atome de carbone du noyau de A3 et de A4, (ii) A1 et A2, et A3 et A4 sont liés les uns aux autres par des atomes de carbone du noyau et (iii) chacun des résidus (voir fig. II) et (voir fig. III) constitue un noyau de 5 atomes; A5 et A6 sont chacun un radical arylène où A5 et A6 sont liés l'un à l'autre et aux résidus R1-C-R2 et R3-C-R4 par des atomes de carbone du noyau et R1-C-R2 et R3-C-R4 sont reliés l'un à l'autre par une chaîne de 4 atomes de carbone; et R1, R2, R3 et R4 représentent chacun un hydrogène ou un radical hydrocarbyle contenant jusqu'à environ 8 atomes de carbone. On divulgue également des systèmes catalytiques comprenant un des composés de phosphine susmentionnés ou plus et du rhodium, des solutions catalytiques comprenant un des composés de phosphine susmentionnés ou plus, du rhodium et un solvant d'hydroformylation, et des procédés d'hydroformylation où des oléfines sont mises en contact avec du monoxyde de carbone, de l'hydrogène et la solution catalytique pour produire des aldéhydes.

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