US3717647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha-nicotinoyl phenylacetonitriles
Assignee: Merck Sharp & Dohme LLC
•
Filing: 1971-04-09
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Granted: 1973-02-20
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Expires: 1991-04-09
Abstract
Abstract The present invention concerns itself with Alpha -nicotinoyl phenylacetonitriles and derivatives thereof which are useful as chemical intermediates in the preparation of novel aza-dibenzo (a,d)cycloheptenes.
Inventors
- 👤 F Villani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:40
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/79; C07D213/24; C07D213/44; C07D213/46; C07D213/50; C07D213/54; C07D213/57; C07D213/84
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
29 words
A member selected from the group consisting of a compound having the formula: wherein Q is a member selected from the group consisting of lower loweralkoxy, halogen or trifluoromethyl.
Claim 2
Dependent Claim
29 words
A member selected from the group consisting of a compound having the formula: wherein Q is a member selected from the group consisting of lower loweralkoxy, halogen or trifluoromethyl.
Claim 3
Dependent Claim
9 words
A compound of claim 1 wherein Q represents halogen.
Claim 4
Dependent Claim
10 words
A compound of claim 1 wherein the halogen is chloro.
Claim 5
Dependent Claim
9 words
A compound of claim 1 wherein Q is trifluoromethyl.
References Cited (Backward Citations)
US3337568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |