US2789984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of (5-benzyloxy-3-indole)-alkylamines
Assignee: Pharmacia and Upjohn Co
•
Filing: 1952-05-24
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Granted: 1957-04-23
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Expires: 1972-05-24
Abstract
No abstract record available.
Inventors
- 👤 Merrill E Speeter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:13
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/10; C07D209/14; C07D209/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
IN A PROCESS FOR THE PREPARATION OF (5-BENZYLOXY-3INDOLE)-ALKYLAMINES, THE STEP OF REDUCTIVELY ALKYLATING THE AMINO RADICAL OF A 5-BENZYLOXY-3-(2-AMINOETHYL)-INDOLE WITH A DI-(LOWER ALKYL)-KETONE IN THE PRESENCE OF HYDROGEN AND A PLATINUM CATALYST.
Claim 2
Dependent Claim
32 words
IN A PROCESS FOR THE PREPARATION OF (5-BENZYLOXY-3INDOLE)-ALKYLAMINES, THE STEP OF REDUCTIVELY ALKYLATING THE AMINO RADICAL OF A 5-BENZYLOXY-3-(2-AMINOETHYL)-INDOLE WITH A DI-(LOWER ALKYL)-KETONE IN THE PRESENCE OF HYDROGEN AND A PLATINUM CATALYST.
References Cited (Backward Citations)
US1793176A
Cited
US2416258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |