US4078002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction of chemical compounds with 9-BBN
Assignee: Aldrich Boranes Inc
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Filing: 1975-12-03
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Granted: 1978-03-07
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Expires: 1995-12-03
Abstract
Abstract 9-Borabicyclo (3.3.1) noname (9-BBN), a relatively stable solid dialkylborane, can be used to reduce a wide variety of reducible chemical compounds, including both organic and inorganic compounds. The stability of the reagent greatly reduces the operating difficulties encountered with other dialkylboranes having similar reduction properties, which are thermally and hydrolytically unstable.
Inventors
- 👤 Herbert C. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:44
CPC Classifications
C; C01; C01G; C01G55/00; C01G55/001; C01G5/00; C01G5/003; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/143; C07C29/147; C07F; C07F5/00; C07F5/02; C07F5/027; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/37; C07C2601/00; C07C2601/12; C07C2601/14; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
62 words
A process for the reduction of a chemical compound having a reducible functional group selected from carbonyl, nitro, azo, oxime, isocyanate, sulfone, sulfonic acid, sulfoxide, thioamide, thioketone, methylenephosphorane, iminophosphorane, iminosulfurane, phosphine oxide, thiophosphate and epoxide groups, which process comprises reacting said compound with an effective quantity of 9-BBN at a temperature below the decomposition temperature of the reactants or the resulting products.
Claim 2
Dependent Claim
62 words
A process for the reduction of a chemical compound having a reducible functional group selected from carbonyl, nitro, azo, oxime, isocyanate, sulfone, sulfonic acid, sulfoxide, thioamide, thioketone, methylenephosphorane, iminophosphorane, iminosulfurane, phosphine oxide, thiophosphate and epoxide groups, which process comprises reacting said compound with an effective quantity of 9-BBN at a temperature below the decomposition temperature of the reactants or the resulting products.
Claim 3
Dependent Claim
14 words
The process of claim 1 in which said 9-BBN is dissolved in a solvent.
Claim 4
Dependent Claim
14 words
The process of claim 1 in which said functional group is a carbonyl group.
Claim 5
Dependent Claim
14 words
The process of claim 3 in which said functional group is an aldehyde group.
Claim 6
Dependent Claim
14 words
The process of claim 3 in which said functional group is a ketone group.
Claim 7
Dependent Claim
15 words
The process of claim 3 in which said functional group is a carboxylic acid group.
Claim 8
Dependent Claim
14 words
The process of claim 3 in which said functional group is an ester group.
Claim 9
Dependent Claim
15 words
The process of claim 3 in which said functional group is an acid halide group.
Claim 10
Dependent Claim
14 words
The process of claim 3 in which said functional group is an amide group.
Claim 11
Dependent Claim
14 words
The process of claim 1 in which said functional group is a nitrile group.
Claim 12
Dependent Claim
14 words
The process of claim 1 in which said functional group is a nitro group.
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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) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |