Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus containing
Patent
1996-04-10
1998-01-20
Ivy, C. Warren
Organic compounds -- part of the class 532-570 series
Organic compounds
Phosphorus containing
568 17, 568454, C07F 952
Patent
active
057103372
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 ' and R.sub.2 ' 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:
World Patent 80-65044C-Abstract Japanese Jul. 31, 1980 JP55100331.
CA94:30191-Abstract Japenese Jul. 31, 1980 JP55100331.
CA90:204251 Abstract Jan. 18, 1979 DE 2824861 "Optically Active Bicycloheptanes and Their use as Chiral Catalyst".
Chapa Gabriel R.
Pryor Kent E.
Segmuller Brigitte E.
Unruh Jerry D.
Cassady Donald R.
Hoechst Celanese Corporation
Ivy C. Warren
Spiering M. Susan
Vollano Jean F.
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