US3147272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing partially reduced organic compounds
Assignee: Individual
•
Filing: 1959-08-18
•
Granted: 1964-09-01
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Expires: 1979-08-18
Abstract
No abstract record available.
Inventors
- 👤 Herbert C Brown
- 👤 Richard F Mcfarlin
- 👤 Rao Bookinkere C Subba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:57
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/069; C07C; C07C201/00; C07C201/06; C07C201/12; C07C253/00; C07C253/30; C07C45/00; C07C45/41; C07C45/44; C07C2601/00; C07C2601/02; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
IN A METHOD FOR REDUCING AN ORGANIC FUNCTIONAL GROUP SELECTED FROM THE CLASS CONSISTING OF ACID HALIDE, TERTIARY AMIDE, AND NITRILE GROUPS WHICH COMPRISES CONTACTING A COMPOUND CONTAINING A FUNCTIONAL GROUP SELECTED FROM SAID CLASS WITH AN ALUMINOHYDRIDE IN AN ALERT SOLVENT THEREFOR AT A TEMPERATURE SUFFICIENT TO EFFECT REDUCTION OF SAID FUNCTIONAL GROUP BUT INSUFFICIENT TO CAUSE DECOMPOSITION OF ANY COMPOUND INVOLVED IN THE REACTION, THE IMPROVEMENT WHEREIN SAID SELECTED GROUP IS REDUCED TO AN ALDEHYDE GROUP BY CONTACTING SAID COMPOUND WITH AN ALUMINOHYDRIDE HAVING THE FORMULA MALHX(OR)Y WHERE M IS AN ALKALI METAL, R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL, LOWER CYCLOALKYL, PHENYL, AND ALKARYL WHERE THE ARYL PORTION IS PHENYL AND THE ALKYL PORTION CONTAINS NOT MORE THAN SIX CARBON ATOMS, X IS A WHOLE NUMBER FROM 1 TO AND Y IS A WHOLE NUMBER FROM 2 TO 3, THE AMOUNT OF SAID ALUMINOHYDRIDE USED HAVING THE FORMULA MALHX(OR)Y BEING NOT SUBSTANTIALLY GREATER THAN ONE MOLE PER Z MOLES OF SAID COMPOUND WHERE Z IS THE SAME NUMBER AS X.
Claim 2
Dependent Claim
178 words
IN A METHOD FOR REDUCING AN ORGANIC FUNCTIONAL GROUP SELECTED FROM THE CLASS CONSISTING OF ACID HALIDE, TERTIARY AMIDE, AND NITRILE GROUPS WHICH COMPRISES CONTACTING A COMPOUND CONTAINING A FUNCTIONAL GROUP SELECTED FROM SAID CLASS WITH AN ALUMINOHYDRIDE IN AN ALERT SOLVENT THEREFOR AT A TEMPERATURE SUFFICIENT TO EFFECT REDUCTION OF SAID FUNCTIONAL GROUP BUT INSUFFICIENT TO CAUSE DECOMPOSITION OF ANY COMPOUND INVOLVED IN THE REACTION, THE IMPROVEMENT WHEREIN SAID SELECTED GROUP IS REDUCED TO AN ALDEHYDE GROUP BY CONTACTING SAID COMPOUND WITH AN ALUMINOHYDRIDE HAVING THE FORMULA MALHX(OR)Y WHERE M IS AN ALKALI METAL, R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL, LOWER CYCLOALKYL, PHENYL, AND ALKARYL WHERE THE ARYL PORTION IS PHENYL AND THE ALKYL PORTION CONTAINS NOT MORE THAN SIX CARBON ATOMS, X IS A WHOLE NUMBER FROM 1 TO AND Y IS A WHOLE NUMBER FROM 2 TO 3, THE AMOUNT OF SAID ALUMINOHYDRIDE USED HAVING THE FORMULA MALHX(OR)Y BEING NOT SUBSTANTIALLY GREATER THAN ONE MOLE PER Z MOLES OF SAID COMPOUND WHERE Z IS THE SAME NUMBER AS X.
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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |