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Phosphino-ferrocene ligands

Assignee: Celanese Corp
•
Filing: 1977-08-08
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Granted: 1979-05-01
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Expires: 1997-08-08
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Abstract

Abstract An improved process for hydroformylating an ethylenically-unsaturated compound to form an aldehyde derivative thereof in the presence of rhodium hydridocarbonyl in complex combination with an organic ligand, characterized by employing as said organic ligand a compound having two phosphino moieties, one being of the formula: ##STR1## and the other being of the formula: ##STR2## wherein R 1 , R 2 , R 1 ', and R 2 ' are organic radicals at least one of which contains an electronegative substituent moiety. The presence of the electronegative substituent in the ligand leads to an increased ratio of linear aldehyde to branched-chain aldehyde in the hydroformylation reaction product.

Inventors

  • 👤 Jerry D. Unruh

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 18:21
CPC Classifications
C; C07; C07F; C07F17/00; C07F17/02; C07C; C07C45/00; C07C45/49; C07C45/50

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 1 words
1,1'Bis[di(4-chlorophenyl)phosphino]ferrocene.
Claim 2
Dependent Claim 1 words
1,1'Bis[di(4-chlorophenyl)phosphino]ferrocene.
Claim 3
Dependent Claim 1 words
1,1'-Bis[di(3-fluorophenyl)phosphino]ferrocene.
Claim 4
Dependent Claim 1 words
1,1'-Bis[di(3-fluorophenyl)phosphino]ferrocene.
Claim 5
Dependent Claim 1 words
1,1'-Bis[di(4-trifluoromethylphenyl)phosphino]ferrocene.
Claim 6
Dependent Claim 1 words
1,1'-Bis[di(4-trifluoromethylphenyl)phosphino]ferrocene.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-04-30 1982-10-30 1983-05-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-04-30 1986-10-30 1987-05-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-04-30 1990-10-30 1991-05-01 $7700.00 Window Closed / Lapsed

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