US4210599A
Expired / Lapsed
US
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Synthesis of boroxarophenanthrenes
Assignee: Mobil Oil AS
•
Filing: 1979-02-15
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Granted: 1980-07-01
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Expires: 1999-02-15
Abstract
Abstract Improved synthesis of boroxarophenanthrenes, comprising the step of adding gaseous BCl 3 to a liquid hydrocarbon slurry of 2-hydroxybiphenyl at a specified temperature. Known methods involve the reaction of BCl 3 with the phenol at -70° C., the reaction being carried out in methylene chloride.
Inventors
- 👤 Robert F. Bridger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:03
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/02; C07F5/025
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
81 words
In an improved process for synthesizing a boroxarophenanthrene, which comprises the steps of reacting gaseous BCl 3 with o-phenylphenol to form an intermediate product having the formula ##STR3## heating this intermediate in the presence of an aluminum halide and treating the product thus obtained with the appropriate reagent to obtain the said boroxarophenanthrene, the improvement whereby the BCl 3 is added to a liquid hydrocarbon slurry of o-phenylphenol maintained at a temperature of from about 0° C. to about 80° C.
Claim 2
Dependent Claim
81 words
In an improved process for synthesizing a boroxarophenanthrene, which comprises the steps of reacting gaseous BCl 3 with o-phenylphenol to form an intermediate product having the formula ##STR3## heating this intermediate in the presence of an aluminum halide and treating the product thus obtained with the appropriate reagent to obtain the said boroxarophenanthrene, the improvement whereby the BCl 3 is added to a liquid hydrocarbon slurry of o-phenylphenol maintained at a temperature of from about 0° C. to about 80° C.
Claim 3
Dependent Claim
10 words
The process of claim 1 wherein the halide is chloride.
Claim 4
Dependent Claim
49 words
In an improved process for reacting gaseous BCl 3 with o-phenylphenol to form a product having the formula ##STR4## the improvement comprising the step of adding the BCl 3 to a liquid hydrocarbon slurry of o-phenylphenol maintained at a temperature of from about 0° C. to about 80° C.
Claim 5
Dependent Claim
49 words
In an improved process for reacting gaseous BCl 3 with o-phenylphenol to form a product having the formula ##STR4## the improvement comprising the step of adding the BCl 3 to a liquid hydrocarbon slurry of o-phenylphenol maintained at a temperature of from about 0° C. to about 80° C.
Claim 6
Dependent Claim
10 words
The process of claim 1 wherein said reagent is water.
Claim 7
Dependent Claim
22 words
The process of claim 4 wherein from about 1.0 to about 2.0 moles of BCl 3 per mole of o-phenylphenol is used.
Claim 8
Dependent Claim
22 words
The process of claim 5 wherein from about 1.1 to about 1.5 moles of BCl 3 per mole of o-phenylphenol is used.
Claim 9
Dependent Claim
22 words
The process of claim 1 where the time of reaction during the improvement ranges from about 15 minutes to about 1 hour.
Claim 10
Dependent Claim
11 words
The process of claim 1 wherein the liquid hydrocarbon is hexane.
Claim 11
Dependent Claim
19 words
The process of claim 1 wherein the temperature during said improvement is from about 20° to about 40° C.
Claim 12
Dependent Claim
69 words
An improved process for synthesizing a 10-hydroxy-10-9-boroxarophenanthrene by reacting gaseous BCl 3 with o-phenylphenol, warming, removing the hydrogen chloride formed, removing the excess BCl 3 and solvent, heating the product thus formed in the presence of aluminum halide and treating with water, the improvement whereby the BCl 3 is added to a liquid hydrocarbon slurry of o-phenylphenol maintained at a temperature of from about 0° to about 80° C.
Claim 13
Dependent Claim
69 words
An improved process for synthesizing a 10-hydroxy-10-9-boroxarophenanthrene by reacting gaseous BCl 3 with o-phenylphenol, warming, removing the hydrogen chloride formed, removing the excess BCl 3 and solvent, heating the product thus formed in the presence of aluminum halide and treating with water, the improvement whereby the BCl 3 is added to a liquid hydrocarbon slurry of o-phenylphenol maintained at a temperature of from about 0° to about 80° C.
Claim 14
Dependent Claim
22 words
The process of claim 10 wherein from about 1.0 to about 2.0 moles of BCl 3 per mole of o-phenylphenol is used.
Claim 15
Dependent Claim
22 words
The process of claim 11 wherein from about 1.1 to about 1.5 moles of BCl 3 per mole of o-phenylphenol is used.
Claim 16
Dependent Claim
22 words
The process of claim 10 wherein the time of reaction during the improvement ranges from about 15 minutes to about 1 hour.
Claim 17
Dependent Claim
11 words
The process of claim 10 wherein the liquid hydrocarbon is hexane.
Claim 18
Dependent Claim
19 words
The process of claim 10 wherein the temperature during said improvement is from about 20° to about 40° C.
Claim 19
Dependent Claim
10 words
The process of claim 10 wherein the halide is chloride.
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) | 1983-07-01 | 1983-12-31 | 1984-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-01 | 1987-12-31 | 1988-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-01 | 1991-12-31 | 1992-07-01 | $7700.00 | Window Closed / Lapsed |