US3857900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation of aldehydes using triarylphosphine rhodium halogenoid catalysts
Assignee: Ethyl Corp
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Filing: 1971-04-26
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Granted: 1974-12-31
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Expires: 1991-04-26
Abstract
Abstract Catalysts of the formula LnMvXy wherein L is a ligand comprising nitrogen, phosphorus, arsenic or antimony, M is ruthenium, osmium, rhodium, iridium, platinum or palladium, X is halogen or pseudo-halogen, n is 1 to 3, v is 1 to 4 and y is 1 to 3 are useful in hydrogenation, hydroformylation and carbonylation reactions.
Inventors
- 👤 G Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:41
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/24; B01J31/2404; C; C07; C07C; C07C45/00; C07C45/49; C07C45/50; C07C5/00; C07C5/02; C07C5/03; C07C5/08; C07C51/00; C07C51/10; C07C51/14; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641; B01J2231/643; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/822; C07C2531/00; C07C2531/16; C07C2531/24; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
69 words
A HYDROGENATION PROCESS FOR CONVERTING ALDEHYDE TO THE CORRESPONDING ALCOHOL WHICH CONSISTS ESSENTIALLY OF REACTING HYDROGEN IN THE ABSENCE OF CARBON MONOXIDE WITH AN ALDEHYDE HAVING THE FORMULA R-CHO WHEREIN R IS A SATURATED, STRAIGHT CHAIN, HYDROCARBON RADICAL O FROM 1 TO ABOUT 24 CARBON ATOMS, IN A LIQUID REACTION MEDIUM HAVING DISSOLVED THEREIN A CATALYTIC AMOUNT OF A CATALYST WHEREIN SAID CATALYST IS A COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
69 words
A HYDROGENATION PROCESS FOR CONVERTING ALDEHYDE TO THE CORRESPONDING ALCOHOL WHICH CONSISTS ESSENTIALLY OF REACTING HYDROGEN IN THE ABSENCE OF CARBON MONOXIDE WITH AN ALDEHYDE HAVING THE FORMULA R-CHO WHEREIN R IS A SATURATED, STRAIGHT CHAIN, HYDROCARBON RADICAL O FROM 1 TO ABOUT 24 CARBON ATOMS, IN A LIQUID REACTION MEDIUM HAVING DISSOLVED THEREIN A CATALYTIC AMOUNT OF A CATALYST WHEREIN SAID CATALYST IS A COMPOUND HAVING THE FORMULA:
Claim 3
Dependent Claim
50 words
A process of claim 1 wherein n is equal to 3, v is equal to 1 or 3, y is selected such that when v is equal to 1, y is equal to 1 and when v is equal to 3, y is equal to 3; and X is chlorine.
Claim 4
Dependent Claim
66 words
A hydrogenation process for converting n-heptaldehyde to the corresponding alcohol which consists essentially of reacting hydrogen in the absence of carbon monoxide with n-heptaldehyde in the presence of a liquid reaction medium having dissolved therein a catalytic quantity of a catalyst and wherein said catalyst is tris(triphenylphosphine)rhodium(III)-trichloride and said process is carried out at a temperature within the range of from about 90* to about 120*C.
Claim 5
Dependent Claim
66 words
A hydrogenation process for converting n-heptaldehyde to the corresponding alcohol which consists essentially of reacting hydrogen in the absence of carbon monoxide with n-heptaldehyde in the presence of a liquid reaction medium having dissolved therein a catalytic quantity of a catalyst and wherein said catalyst is tris(triphenylphosphine)rhodium(III)-trichloride and said process is carried out at a temperature within the range of from about 90* to about 120*C.
Claim 6
Dependent Claim
15 words
A process of claim 2 wherein n, v and y are each equal to 3.
Claim 7
Dependent Claim
9 words
A process of claim 4 wherein L is triphenylphospine.
Claim 8
Dependent Claim
20 words
A process of claim 2 wherein n is equal to 3 and v and y are each equal to 1.
Claim 9
Dependent Claim
9 words
A process of claim 6 wherein L is triphenylphosphine.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |