US4256670A
Expired / Lapsed
US
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Production of amino substituted aromatic compounds
Assignee: Honeywell UOP LLC
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Filing: 1979-11-15
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Granted: 1981-03-17
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Expires: 1999-11-15
Abstract
Abstract Amino substituted aromatic compounds may be prepared by treating the corresponding nitro substituted aromatic compound at an elevated temperature and pressure in the presence of a catalytic composition of matter comprising metal catalyst complexes selected from the group consisting of metal phthalocyanines and metal carbonyls in which the metal portion of the compound is a Group VIII metal. Reaction conditions which may be employed will include temperatures ranging from about 90° to about 300° C. and pressures ranging from about 5 to about 5000 atmospheres.
Inventors
- 👤 Edwin H. Homeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:20
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/30; C07C209/32; C07C209/325; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
45 words
A process for the production of an amino substituted aromatic compound which comprises treating a nitro substituted aromatic compound at reaction conditions in the presence of a catalytic composition of matter consisting essentially of a metal phthalocyanine, and recovering the resultant amino substituted aromatic compound.
Claim 2
Dependent Claim
45 words
A process for the production of an amino substituted aromatic compound which comprises treating a nitro substituted aromatic compound at reaction conditions in the presence of a catalytic composition of matter consisting essentially of a metal phthalocyanine, and recovering the resultant amino substituted aromatic compound.
Claim 3
Dependent Claim
41 words
The process as set forth in claim 1 in which said reaction conditions include a temperature in the range of from about 90° to about 300° C. and a pressure in the range of from about 5 to about 5000 atmospheres.
Claim 4
Dependent Claim
17 words
The process as set forth in claim 2 in which said pressure is afforded by carbon monoxide.
Claim 5
Dependent Claim
23 words
The process as set forth in claim 1 in which said metal phthalocyanine catalytic composition of matter consist essentially of chlororhodium phthalocyanine tetrasulfonate.
Claim 6
Dependent Claim
22 words
The process as set forth in claim 1 in which said metal phthalocyanine catalytic composition of matter consist essentially of ruthenium phthalocyanine.
Claim 7
Dependent Claim
25 words
The process as set forth in claim 1 in which said nitro substituted aromatic compound is nitrobenzene and said amino substituted aromatic compound is aniline.
Claim 8
Dependent Claim
25 words
The process as set forth in claim 1 in which said nitro substituted aromatic compound is 1-nitro-2,5-dimethylbenzene and said amino substituted aromatic compound is 2,5-xylidine.
Claim 9
Dependent Claim
25 words
The process as set forth in claim 1 in which said nitro substituted aromatic compound is p-nitrotoluene and said amino substituted aromatic compound is p-toluidine.
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) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |