Patent US4544450A successfully refreshed from Google Patents.
US4544450A
Expired / Lapsed
US
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Electrochemical process for the synthesis of organic compounds
Assignee: Anic SpA
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Filing: 1983-06-30
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Granted: 1985-10-01
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Expires: 2003-06-30
Abstract
Abstract An electrochemical process is disclosed for the synthesis of organic compounds, said process having the unique characteristic that the element evolved at the anode is exploited by having it reacting with the product of electrolysis obtained at the cathode by the presence of an appropriate catalyst. The catalyst may be associated in the most convenient manner to the anode, or it can be the anode itself. The process opens the way to a number of synthesis reaction which may be carried out electrolytically instead of the conventional ways.
Inventors
- 👤 Ermanno Oberrauch
- 👤 Lennard Eberson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:18
CPC Classifications
C; C25; C25B; C25B3/00; C25B3/01; C25B3/07
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
110 words
In an electrochemical process conducted in an undivided electrolytic cell having a graphite anode and a platinum cathode, wherein a starting methylbenzene compound, having at least one methyl group bonded to the nucleus thereof, is reacted, at the anode with an acetate in the presence of acetic acid to form the corresponding nuclear acetate and a benzyl acetate byproduct, and wherein hydrogen evolves at said cathode, the improvement which comprises adding a hydrogenolysis catalyst comprised of a precious metal on a carbon substrate in an amount sufficient to cause said hydrogen to react, at said cathode, with said benzyl acetate by-product, to regenerate said starting methylbenzene compound and acetic acid.
Claim 2
Dependent Claim
110 words
In an electrochemical process conducted in an undivided electrolytic cell having a graphite anode and a platinum cathode, wherein a starting methylbenzene compound, having at least one methyl group bonded to the nucleus thereof, is reacted, at the anode with an acetate in the presence of acetic acid to form the corresponding nuclear acetate and a benzyl acetate byproduct, and wherein hydrogen evolves at said cathode, the improvement which comprises adding a hydrogenolysis catalyst comprised of a precious metal on a carbon substrate in an amount sufficient to cause said hydrogen to react, at said cathode, with said benzyl acetate by-product, to regenerate said starting methylbenzene compound and acetic acid.
Claim 3
Dependent Claim
54 words
A process as defined in claim 1 wherein said reaction at said anode takes place in the presence of water and oxygen-containing by-products of said starting methylbenzene compound are formed; and said oxygen containing by-products are reacted at said cathode in the presence of said catalyst to regenerate said starting methylbenzene compound and water.
Claim 4
Dependent Claim
42 words
A process as defined in claim 2 wherein the reactants at said cathode are sufficiently agitated in the presence of said catalyst to cause said hydrogen to catalytically react with said benzyl acetate by-product and said oxygen-containing by-products of said methylbenzene compound.
Claim 5
Dependent Claim
18 words
A process as defined in claim 3 wherein said methylbenzene compound is selected from di-, tri-, and tetramethylbenzenes.
Claim 6
Dependent Claim
34 words
A process as defined in claim 1 wherein the reactants at said cathode are sufficiently agitated in the presence of said catalyst to cause said hydrogen to catalytically react with said benzyl acetate by-product.
Claim 7
Dependent Claim
22 words
A process as defined in claim 1 wherein the catalyst used is a hydrogenolysis catalyst consisting of palladium on a carbon substrate.
Claim 8
Dependent Claim
18 words
A process as defined in claim 1 wherein said methylbenzene compound is selected from di-, tri- and tetramethylbenzenes.
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) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |