US2898379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction of compounds with amine boranes
Assignee: Callery Chemical Co
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Filing: 1957-06-18
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Granted: 1959-08-04
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Expires: 1977-06-18
Abstract
No abstract record available.
Inventors
- 👤 Jr David L Chamberlain
- 👤 William H Schechter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:29
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/143; C07C29/14; C07C29/147
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
THAT METHOD OF REDUCING ORGANIC FUNCTIONAL GROUPS SELECTED FROM THE GLASS CONSISTING OF ALDEHYDE, KETONE AND ACID CHLORIDE FUNCTIONAL GROUPS WHICH COMPRISES CONTACTING A COMPOUND CONTAINING AT LEAST ONE ORGANIC FUNCTIONAL GROUP SELECTED FROM THE SAID CLASS WITH AN AMINEBORANE IN WHICH AT LEAST ONE HYDROGEN ATOM IS ATTACHED TO A BORON ATOM, AT A TEMPERATURE SUFFICIENT TO EFFECT REDUCTION OF SAID FUNCTIONAL GROUP BUT INSUFFICIENT TO CAUSE DECOMPOSITION OF SAID COMPOUND AND ITS REDUCTION PRODUCT WHEREBY SAID FUNCTIONAL GROUP IS REDUCED, AND RECOVERING THE REDUCTION PRODUCT FROM THE MIXTURE.
Claim 2
Dependent Claim
90 words
THAT METHOD OF REDUCING ORGANIC FUNCTIONAL GROUPS SELECTED FROM THE GLASS CONSISTING OF ALDEHYDE, KETONE AND ACID CHLORIDE FUNCTIONAL GROUPS WHICH COMPRISES CONTACTING A COMPOUND CONTAINING AT LEAST ONE ORGANIC FUNCTIONAL GROUP SELECTED FROM THE SAID CLASS WITH AN AMINEBORANE IN WHICH AT LEAST ONE HYDROGEN ATOM IS ATTACHED TO A BORON ATOM, AT A TEMPERATURE SUFFICIENT TO EFFECT REDUCTION OF SAID FUNCTIONAL GROUP BUT INSUFFICIENT TO CAUSE DECOMPOSITION OF SAID COMPOUND AND ITS REDUCTION PRODUCT WHEREBY SAID FUNCTIONAL GROUP IS REDUCED, AND RECOVERING THE REDUCTION PRODUCT FROM THE MIXTURE.
References Cited (Backward Citations)
US2738369A
Cited
US2683721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |