Patent US3084159A successfully refreshed from Google Patents.
US3084159A
Expired / Lapsed
US
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3-enol ethers of 3-oxo-delta-6-aminomethyl steroids and process for preparing same
Assignee: BDH Chemicals Ltd
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Filing: 1962-01-25
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Granted: 1963-04-02
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Expires: 1982-01-25
Abstract
No abstract record available.
Inventors
- 👤 Kirk David Neville
- 👤 Petrow Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:26
CPC Classifications
C; C07; C07J; C07J43/00; C07J43/003; C07J41/00; C07J41/0033; C07J41/0038; C07J41/005; C07J41/0055; C07J71/00; C07J71/0005; C07J71/0026; C07J71/0031
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS FOR CONVERTING A 3-ENOL ETHER OF A 3-OXO$4-STEROID, UNSUBSTITUTED IN POSITIONS 4 AND 6, INTO A CORRESPONDING 6-(N-DISUBSTITUTED) AMINOMETHYL DERIVATIVE, COMPRISING: TREATING THE SAID 3-ENOL ETHER WITH A VILSMIER REAGENT PROVIDING AN N-DISUBETITUTED AMINO GROUP, UNDER ANHYDROUS CONDITIONS, AND REDUCING THE RESULTING 6-METHINYL IMINIUM SALT UNDER ANHYDROUS CONSITIONS WITH A REAGENT PROVIDING HYDRIDE IONS.
Claim 2
Dependent Claim
56 words
A PROCESS FOR CONVERTING A 3-ENOL ETHER OF A 3-OXO$4-STEROID, UNSUBSTITUTED IN POSITIONS 4 AND 6, INTO A CORRESPONDING 6-(N-DISUBSTITUTED) AMINOMETHYL DERIVATIVE, COMPRISING: TREATING THE SAID 3-ENOL ETHER WITH A VILSMIER REAGENT PROVIDING AN N-DISUBETITUTED AMINO GROUP, UNDER ANHYDROUS CONDITIONS, AND REDUCING THE RESULTING 6-METHINYL IMINIUM SALT UNDER ANHYDROUS CONSITIONS WITH A REAGENT PROVIDING HYDRIDE IONS.
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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |