US3959226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of substituted aromatic compounds
Assignee: Universal Oil Products Co
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Filing: 1974-11-04
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Granted: 1976-05-25
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Expires: 1994-11-04
Abstract
Abstract A process is disclosed for the production of substituted aromatic compounds which comprises the reaction of an aromatic hydrocarbon with a compound containing an aldehyde functional group and a saturated hydrocarbon containing a tertiary carbon atom, or which is isomerized to form a saturated hydrocarbon containing a tertiary carbon atom during the reaction, in the presence of a Friedel-Crafts catalyst.
Inventors
- 👤 Louis Schmerling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:18
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/86; C07C2/862; C07C2/867; C07C1/00; C07C1/20; C07C1/207; C07C1/2072; C07C2/76; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1213; C07C2527/125; C07C2527/126; C07C2527/135; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
61 words
A process for the reaction of an aromatic hydrocarbon with a compound containing an aldehyde functional group and a saturated hydrocarbon containing a tertiary carbon atom, or which is isomerized to form a saturated hydrocarbon containing a tertiary carbon atom during reaction conditions, in the presence of a Friedel-Crafts catalyst without extraneous hydrogen chloride, and recovering the resultant hydrocarbyl-substituted aromatic compound.
Claim 2
Dependent Claim
61 words
A process for the reaction of an aromatic hydrocarbon with a compound containing an aldehyde functional group and a saturated hydrocarbon containing a tertiary carbon atom, or which is isomerized to form a saturated hydrocarbon containing a tertiary carbon atom during reaction conditions, in the presence of a Friedel-Crafts catalyst without extraneous hydrogen chloride, and recovering the resultant hydrocarbyl-substituted aromatic compound.
Claim 3
Dependent Claim
40 words
The process of claim 1 further characterized in that the reaction conditions include a temperature in the range of from about 0° to about 100°C and a pressure in the range of from about 1 atmosphere to about 100 atmospheres.
Claim 4
Dependent Claim
15 words
The process of claim 1 further characterized in that said Friedel-Crafts catalyst is aluminum chloride.
Claim 5
Dependent Claim
15 words
The process of claim 1 further characterized in that said Friedel-Crafts catalyst is zirconium chloride.
Claim 6
Dependent Claim
15 words
The process of claim 1 further characterized in that said Friedel-Crafts catalyst is boron fluoride.
Claim 7
Dependent Claim
48 words
The process of claim 1 further characterized in that the aromatic hydrocarbon is benzene, the compound containing the aldehyde functional group is propionaldehyde, the saturated hydrocarbon containing a tertiary carbon atom is methylcyclohexane, and the resultant substituted aromatic compounds comprise n-propylbenzene, isomers of di-n-propylbenzene and isomers of (methylcyclohexyl)benzene.
Claim 8
Dependent Claim
48 words
The process of claim 1 further characterized in that the aromatic hydrocarbon is benzene, the compound containing the aldehyde functional group is isobutyraldehyde, the saturated hydrocarbon containing a tertiary carbon atom is isopentane and the resultant substituted aromatic compounds comprise isobutylbenzene, isomers of di-isobutylbenzene and isomers of pentylbenzene.
Claim 9
Dependent Claim
51 words
The process of claim 1 further characterized in that the aromatic hydrocarbon is benzene, the compound containing the aldehyde functional group is paraformaldehyde, the saturated hydrocarbon containing a tertiary carbon atom is methylcyclopentane and the resultant substituted aromatic compounds comprise toluene, the isomeric xylenes, and isomers of (methylcyclopentyl)benzene and of (methylcyclopentyl)toluene.
Claim 10
Dependent Claim
46 words
The process of claim 1 further characterized in that the aromatic hydrocarbon is toluene, the compound containing the aldehyde functional group is benzaldehyde, the saturated hydrocarbon containing a tertiary carbon atom is methylcyclopentane and the resultant substituted aromatic compounds comprise isomers of benzyltoluene, dibenzyltoluene and (methylcyclopentyl)toluene.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |