US3891656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arylation process
Assignee: Standard Oil Co
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Filing: 1970-07-06
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Granted: 1975-06-24
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Expires: 1990-07-06
Abstract
Abstract Aromatic compounds - either carbocyclic or heterocyclic - can be arylated by heating them with a nitro-substituted aromatic compound. Suitable reaction conditions include temperatures of about 400*-1000*C., pressures of about 0.01 to 1000 atmospheres, and a reaction time of 0.1 seconds to 10 hours. Also aromatic carbocyclic and aromatic heterocyclic compounds can be dimerized in the presence of nitro substituted aromatic compounds at similar reaction conditions.
Inventors
- 👤 Ellis K Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:38
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07C; C07C17/00; C07C17/26; C07C17/263; C07C2/00; C07C2/86; C07D213/22; C07D213/24; C07D213/26; C07D213/36; C07D213/38; C07D213/54; C07D213/55; C07D215/00; C07D215/02; C07D215/04; C07D215/12; C07D263/00; C07D263/52; C07D263/54; C07D263/56; C07D263/57; C07D277/00; C07D277/60; C07D277/62; C07D277/64; C07D307/00; C07D307/77; C07D307/91; C07D333/00; C07D333/02; C07D333/04; C07D333/06; C07D333/08; C07D333/12
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
97 words
AN ARYLATION PROCESS COMPRISING: A. CHARGING TO A REACTION ZONE A FEED MIXTURE OF NITROBENZENE, AND AN AROMATIC CYLIC CO-REACTANT SELECTED FROM THE GROUP CONSISTING OF METHYL BENZOATE, PYRIDINE, DIMETHYL PHTHALATE, BENZONITRILE, THIOPHENE, PHENOL, TOLUENE, OXYLENE, AND CHLOROBENZENE, IN THE MOLE RATIO OF ABOUT 1:1 TO ABOUT 1:100 RESPECTIVELY; B. HEATING IN THE PRESENCE OF AN INERT GAS, THE FEED MIXTURE TO A TEMPERATURE OF ABOUT 400* TO ABOUT 1,000*C FOR A TIME SUFFICIENT FOR REACTION TO OCCUR; AND C. MAINTAINING DURING THE HEATING PERIOD A PRESSURE IN THE REACTION ZONE OF ABOUT 0.01 TO 1,000 ATMOSPHERES.
Claim 2
Dependent Claim
97 words
AN ARYLATION PROCESS COMPRISING: A. CHARGING TO A REACTION ZONE A FEED MIXTURE OF NITROBENZENE, AND AN AROMATIC CYLIC CO-REACTANT SELECTED FROM THE GROUP CONSISTING OF METHYL BENZOATE, PYRIDINE, DIMETHYL PHTHALATE, BENZONITRILE, THIOPHENE, PHENOL, TOLUENE, OXYLENE, AND CHLOROBENZENE, IN THE MOLE RATIO OF ABOUT 1:1 TO ABOUT 1:100 RESPECTIVELY; B. HEATING IN THE PRESENCE OF AN INERT GAS, THE FEED MIXTURE TO A TEMPERATURE OF ABOUT 400* TO ABOUT 1,000*C FOR A TIME SUFFICIENT FOR REACTION TO OCCUR; AND C. MAINTAINING DURING THE HEATING PERIOD A PRESSURE IN THE REACTION ZONE OF ABOUT 0.01 TO 1,000 ATMOSPHERES.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the reactants are nitrobenzene and pyridine.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein the reactants are nitrobenzene and dimethyl phthalate.
Claim 5
Dependent Claim
12 words
The process of claim 1 wherein the reactants are nitrobenzene and benzonitrile.
Claim 6
Dependent Claim
12 words
The process of claim 1 wherein the reactants are nitrobenzene and thiophene.
Claim 7
Dependent Claim
12 words
The process of claim 1 wherein the reactants are nitrobenzene and phenol.
Claim 8
Dependent Claim
12 words
The process of claim 1 wherein the reactants are nitrobenzene and toluene.
Claim 9
Dependent Claim
12 words
The process of claim 8 wherein the reactants are nitrobenzene and o-xylene.
Claim 10
Dependent Claim
88 words
An arylation process comprising: a. charging to a reaction zone a feed mixture of m-dinitrobenzene, and an aromatic cyclic co-reactant selected from the group consisting of benzonitrile and chlorobenzene, in the mole ratio of about 1:1 to about 1:100 respectively. b. heating in the presence of an inert gas, the feed mixture to a temperature of about 400* to about 1,000*C for a time sufficient for reaction to occur; and c. maintaining during the heating period a pressure in the reaction zone of about 0.01 to 1,000 atmospheres.
Claim 11
Dependent Claim
88 words
An arylation process comprising: a. charging to a reaction zone a feed mixture of m-dinitrobenzene, and an aromatic cyclic co-reactant selected from the group consisting of benzonitrile and chlorobenzene, in the mole ratio of about 1:1 to about 1:100 respectively. b. heating in the presence of an inert gas, the feed mixture to a temperature of about 400* to about 1,000*C for a time sufficient for reaction to occur; and c. maintaining during the heating period a pressure in the reaction zone of about 0.01 to 1,000 atmospheres.
Claim 12
Dependent Claim
76 words
An arylation process comprising: a. charging to a reaction zone a feed mixture of p-nitrotoluene, and benzene, in the mole ratio of about 1:1 to about 1:100 respectively; b. heating in the presence of an inert gas, the feed mixture to a temperature of about 400* to about 1,000*C for a time sufficient for reaction to occur; and c. maintaining during the heating period a pressure in the reaction zone of about 0.01 to 1,000 atmospheres.
Claim 13
Dependent Claim
76 words
An arylation process comprising: a. charging to a reaction zone a feed mixture of p-nitrotoluene, and benzene, in the mole ratio of about 1:1 to about 1:100 respectively; b. heating in the presence of an inert gas, the feed mixture to a temperature of about 400* to about 1,000*C for a time sufficient for reaction to occur; and c. maintaining during the heating period a pressure in the reaction zone of about 0.01 to 1,000 atmospheres.
Claim 14
Dependent Claim
15 words
The process of claim 1 wherein the nitro-compound is nitrobenzene and the co-reactant is chlorobenzene.
Claim 15
Dependent Claim
15 words
The process of claim 9 wherein the nitro-compound is m-dinitrobenzene and the co-reactant is benzonitrile.
References Cited (Backward Citations)
US3524857A
Cited
US3555029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |