Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus acids or salts thereof
Patent
1996-04-10
1997-04-01
Geist, Gary
Organic compounds -- part of the class 532-570 series
Organic compounds
Phosphorus acids or salts thereof
568 13, C07F 946, C07F 928
Patent
active
056167857
ABSTRACT:
Hydroformylation of alkenes to aldehydes in the presence of a rhodium complex catalyst is improved by the addition of a novel bidentate ligand of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.1.sup.' 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.
REFERENCES:
Kapoor et al., J. Organomet. Chem., 276(2), pp.167-170 (1984).
Magnelli et al., Inorg. Chem., 5(3), pp. 457-461 (1966).
Chapa Gabriel R.
Pryor Kent E.
Segmuller Brigitte E.
Unruh Jerry D.
Cassady Donald R.
Frazier Barbara S.
Geist Gary
Hoechst Celanese Corporation
Spiering M. Susan
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