Patent US3922266A successfully refreshed from Google Patents.
US3922266A
Expired / Lapsed
US
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Aryl ketones and production thereof
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1972-12-18
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Granted: 1975-11-25
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Expires: 1992-12-18
Abstract
Abstract A process for preparing aryl ketones of the formula: FROM A COMPOUND OF THE FORMULA: THROUGH A COMPOUND OF THE FORMULA: A COMPOUND OF THE FORMULA: AND A COMPOUND OF THE FORMULA: THE SAID ARYL KETONES BEING (I) being useful as central nervous system depressants and the intermediary compounds (II), (III), and (IV) showing some pharmacological activities.
Inventors
- 👤 Junki Katsube
- 👤 Masaru Nakao
- 👤 Kikuo Sasajima
- 👤 Isamu Maruyama
- 👤 Masaharu Takayama
- 👤 Keiichi Ono
- 👤 Shigenari Katayama
- 👤 Yoshihiro Tanaka
- 👤 Shigeho Inaba
- 👤 Hisao Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:04
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/10; C07D295/104; C07D295/108; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/40; C07D211/44; C07D211/52; C07D295/08; C07D295/084; C07D295/092
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
9 words
The compound of claim 1, wherein R11 is o-methoxyphenyl.
Claim 4
Dependent Claim
7 words
The compound of claim 2 comprising 1-(4-(p-fluorophenyl)-4-oxo-2-butenyl)-4-(o-methoxyphenyl)piperazine.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |