Patent US4233591A successfully refreshed from Google Patents.
Patent US4029706A successfully refreshed from Google Patents.
US4029706A
Expired / Lapsed
US
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Reduction with polymeric reagent
Assignee: Dynapol Shareholders Liquidating Trust
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Filing: 1975-03-10
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Granted: 1977-06-14
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Expires: 1995-03-10
Abstract
Abstract Complexes of boron trihydride with solid particulate insoluble cross-linked thiohydrocarbon polymers are used in organic reduction reactions.
Inventors
- 👤 Guy A. Crosby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:45
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/08; C08F; C08F8/00; C08F8/34; C08F8/42; C08G75/00; C08G75/02; C08G75/0204; C08G75/0286; C08G75/0295
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
104 words
In the process for reducing an organic compound wherein said compound is contacted with diborance gas under reducing conditions, the improvement which comprises employing in place of said diborane gas a polymeric boron hydride reagent comprising a prticulate, solid, cross-linked aliphatic, cycloaliphatic, or aromatic organic polymer containing a substantial plurality of sulfur atoms in a thioether configuration and, in complex combination with a major proportion of said sulfur atoms, boron hydride molecules in an amount sufficient to provide not less than two moles of complexed BH 3 for each equivalent of reduction desired, and thereafter isolating the reduced organic compound and recovering said reagent.
Claim 2
Dependent Claim
104 words
In the process for reducing an organic compound wherein said compound is contacted with diborance gas under reducing conditions, the improvement which comprises employing in place of said diborane gas a polymeric boron hydride reagent comprising a prticulate, solid, cross-linked aliphatic, cycloaliphatic, or aromatic organic polymer containing a substantial plurality of sulfur atoms in a thioether configuration and, in complex combination with a major proportion of said sulfur atoms, boron hydride molecules in an amount sufficient to provide not less than two moles of complexed BH 3 for each equivalent of reduction desired, and thereafter isolating the reduced organic compound and recovering said reagent.
Claim 3
Dependent Claim
44 words
The process of claim 1, wherein said reducing conditions comprise a temperature in the range of from about 20° C to about 100° C, fluid phase intimate contacting, and a reaction time in the range of from about 5 minutes to about 24 hours.
Claim 4
Dependent Claim
12 words
The process of claim 2 wherein said organic compound is an aldehyde.
Claim 5
Dependent Claim
12 words
The process of claim 2 wherein said organic compound is a ketone.
Claim 6
Dependent Claim
12 words
The process of claim 2 wherein said organic compound is a lactone,.
Claim 7
Dependent Claim
12 words
The process of claim 2 wherein said compound is an organic oxide.
Claim 8
Dependent Claim
11 words
The process of claim 2 wherein said compound is an ester.
Claim 9
Dependent Claim
12 words
The process of claim 2 wherein said compound is a carboxylic acid.
Claim 10
Dependent Claim
11 words
The process of claim 2 wherein said compound is a nitrile.
Claim 11
Dependent Claim
90 words
The process for reducing acetophenone to α-phenyl ethanol which comprises contacting said acetophenone under reducing conditions with a polymeric boron hydride reagent comprising a particulate, solid, cross-linked aliphatic, cycloaliphatic, or aromatic organic polymer containing a substantial plurality of sulfur atoms in a thioether configuration and, in complex combination with a major proportion of said sulfur atoms, boron hydride molecules in an amount sufficient to provide not less than two moles of complexed BH 3 for each equivalent of reduction desired, and thereafter isolating the α-phenyl ethanol and recovering said reagent.
Claim 12
Dependent Claim
90 words
The process for reducing acetophenone to α-phenyl ethanol which comprises contacting said acetophenone under reducing conditions with a polymeric boron hydride reagent comprising a particulate, solid, cross-linked aliphatic, cycloaliphatic, or aromatic organic polymer containing a substantial plurality of sulfur atoms in a thioether configuration and, in complex combination with a major proportion of said sulfur atoms, boron hydride molecules in an amount sufficient to provide not less than two moles of complexed BH 3 for each equivalent of reduction desired, and thereafter isolating the α-phenyl ethanol and recovering said reagent.
Claim 13
Dependent Claim
88 words
The process for reducing 1-decene to 1-decanol which comprises contacting said 1-decene under reducing conditions with a polymeric boron hydride reagent comprising a particulate, solid, cross-linked aliphatic, cycloaliphatic, or aromatic organic polymer containing a substantial plurality of sulfur atoms in a thioether configuration and, in complex combination with a major proportion of said sulfur atoms, boron hydride molecules in an amount sufficient to provide not less than two moles of complexed BH 3 for each equivalent of reduction desired, and thereafter isolating the 1-decanol and recovering said reagent.
Claim 14
Dependent Claim
88 words
The process for reducing 1-decene to 1-decanol which comprises contacting said 1-decene under reducing conditions with a polymeric boron hydride reagent comprising a particulate, solid, cross-linked aliphatic, cycloaliphatic, or aromatic organic polymer containing a substantial plurality of sulfur atoms in a thioether configuration and, in complex combination with a major proportion of said sulfur atoms, boron hydride molecules in an amount sufficient to provide not less than two moles of complexed BH 3 for each equivalent of reduction desired, and thereafter isolating the 1-decanol and recovering said reagent.
Claim 15
Dependent Claim
88 words
The process for reducing phenylnitrile to benzylamine which comprises contacting said phenylnitrile under reducing conditions with a polymeric boron hydride reagent comprising a particulate, solid, cross-linked aliphatic, cycloaliphatic, or aromatic organic polymer containing a substantial plurality of sulfur atoms in a thioether configuration and, in complex combination with a major proportion of said sulfur atoms, boron hydride molecules in an amount sufficient to provide not less than two moles of complexed BH 3 for each equivalent of reduction desired, and thereafter isolating the benzylamine and recovering said reagent.
Claim 16
Dependent Claim
88 words
The process for reducing phenylnitrile to benzylamine which comprises contacting said phenylnitrile under reducing conditions with a polymeric boron hydride reagent comprising a particulate, solid, cross-linked aliphatic, cycloaliphatic, or aromatic organic polymer containing a substantial plurality of sulfur atoms in a thioether configuration and, in complex combination with a major proportion of said sulfur atoms, boron hydride molecules in an amount sufficient to provide not less than two moles of complexed BH 3 for each equivalent of reduction desired, and thereafter isolating the benzylamine and recovering said reagent.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |