US3888846A
Expired / Lapsed
US
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Process for 2(2-(1,3-diazacycloalk-2-enyl))benzophenone derivatives and 1,3-diazacycloalkenyl(2,1-a)isoindole derivatives
Assignee: F Hoffmann La Roche AG
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Filing: 1967-05-18
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Granted: 1975-06-10
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Expires: 1987-05-18
Abstract
Abstract Novel 2(2-(1,3-diazacycloalk-2-enyl))benzophenone compounds and novel 1,3-diazacycloalkenyl(2,1-a)isoindole compounds having useful analgesic and psychostimulant properties are prepared inter alia by condensation of o-benzoylbenzaldehydes with aliphatic diamines.
Inventors
- 👤 Werner Metlesics
- 👤 Leo Henryk Sternbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:56
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04; A; A61; A61K; A61K31/00; C07C; C07C45/00; C07C45/27; C07C45/29; C07C45/41; C07C51/00; C07C51/347; C07C51/363; C07D209/00; C07D209/02; C07D209/44; C07D233/00; C07D233/04; C07D233/20; C07D233/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
11 words
A PROCESS FOR THE PREPARATION OF A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
11 words
A PROCESS FOR THE PREPARATION OF A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
23 words
A process in accordance with claim 1, wherein B is ethylene; R1, R2 and R3 are hydrogen; and R4 is hydrogen or chlorine.
Claim 4
Dependent Claim
13 words
A process in accordance with claim 2, wherein the oxidizing agent is air.
Claim 5
Dependent Claim
14 words
A process in accordance with claim 2, wherein the oxidizing agent is gaseous oxygen.
Claim 6
Dependent Claim
14 words
A process in accordance with claim 2, wherein the oxidizing agent is chromium trioxide.
References Cited (Backward Citations)
US3379733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |