Stabilization of phosphite ligands in hydroformylation process

Details Stabilization of phosphite ligands in hydroformylation process Stabilization of phosphite ligands in hydroformylation process

1994-08-19

1998-05-26

Geist, Gary

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568451, 568492, 558 71, 502161, C07C 4550

Patent

active

057568553

ABSTRACT:
The present invention provides a hydroformylation process comprising: (1) forming a reaction mixture containing: (a) an olefinic compound, (b) hydrogen, (c) carbon monoxide, (d) a phosphite in which each phosphorus atom is bonded to three oxygen atoms and at least one such oxygen atom is bonded to a carbon atom of an aromatic ring that is adjacent to another carbon atom of said ring having a pendant monovalent group having a steric hindrance at least as great as the steric hindrance of the isopropyl group, (e) a catalytic amount of rhodium, and (f) a Group VIII metal (other than a rhodium) in an amount sufficient to reduce the rhodium-catalyzed decomposition of the phosphite during the hydroformylation process; and (2) maintaining the reaction mixture under conditions at which the olefinic compound reacts with the hydrogen and carbon monoxide to form an aldehyde.

REFERENCES:
patent: 3553298 (1971-01-01), Hodan et al.
patent: 3597461 (1971-08-01), L'Eplattenier et al.
patent: 3661949 (1972-05-01), Fenton
patent: 3876672 (1975-04-01), Mrowca
patent: 4200592 (1980-04-01), Hignett et al.
patent: 4306086 (1981-12-01), Demay
patent: 4453019 (1984-06-01), Chang
patent: 4467116 (1984-08-01), van Leeuwen et al.
patent: 4539306 (1985-09-01), Chang
patent: 4567306 (1986-01-01), Dennis
patent: 4599206 (1986-07-01), Billig et al.
patent: 4599323 (1986-07-01), Demay et al.
patent: 4650894 (1987-03-01), Fisch et al.
patent: 4668651 (1987-05-01), Billig et al.
patent: 4748261 (1988-05-01), Billig et al.
patent: 5059710 (1991-10-01), Abatjoglou et al.
patent: 5087763 (1992-02-01), Sorensen
patent: 5135901 (1992-08-01), Beavers
patent: 5196596 (1993-03-01), Abatjoglou
patent: 5233093 (1993-08-01), Pitchai et al.
patent: 5288918 (1994-02-01), Maher et al.
patent: 5434311 (1995-07-01), Omatsu et al.
patent: 5488174 (1996-01-01), Drent et al.
Anna M. Trzeciak et al., Synthesis and Properties of the Orthometallated Rhodium Complex Rh {P(OPh).sub.3 }.sub.3{ P(OC.sub.6 H.sub.4)(OPh).sub.2 } Z. anorg. allg. Chem. 577 (1989), pp. 255-262.
F.H. Westheimer, et al., Rates and Mechanisms of Hydrolysis of Esters of Phosphorous Acid, J. Am. Chem. Soc. 1988, 110,pp. 181-185.
L.N. Lewis et al, Catalytic C-C Bond Formation via Ortho-Metalated Complexes, J. Am. Chem. Soc., vol. 108, No. 10, 1986, 1986, pp. 2728-2735.

Affiliated with

Also associated with

Rating

Stabilization of phosphite ligands in hydroformylation process does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stabilization of phosphite ligands in hydroformylation process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stabilization of phosphite ligands in hydroformylation process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1962874