Patent US2892841A successfully refreshed from Google Patents.
US2892841A
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Process for aminating nitrogen-containing heterocyclic compounds
Assignee: WR Grace and Co
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Filing: 1956-04-02
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Granted: 1959-06-30
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Expires: 1976-04-02
Abstract
No abstract record available.
Inventors
- 👤 Rudner Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:55
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/79; C07D213/80; C07C; C07C209/00; C07C209/02; C07D215/00; C07D215/02; C07D215/16; C07D215/20; C07D215/24; C07D215/26; C07D215/30; C07D215/38; C07D215/58; C07D217/00; C07D217/02; C07D217/08; C07D217/22
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
79 words
A PROCESS FOR PREPARING THE ALPHA AMINO DERIVATIVE OF AN AROMATIC COMPOUND CONTAINING A SOLE TERTIARY NITROGEN ATOM IN A CONJUGATELY UNSATURATED SIX-MEMBERED RING, WHEREIN SAID COMPOUND AT --10 TO 100* C. IS SUBJECTED TO THE ACTION OF CHLORAMINE WHEREBY THE HYDROGEN ON THE ANNULAR CARBON ATOM ATTACHED BY A DOUBLE BOND TO SAID TERTIARY NITROGEN IS REPLACED BY THE --NH2 GROUP OF SAID CHLORAMINE AND RECOVERING SAID ALPHA AMINO DERIVATIVE OF SAID AROMATIC COMPOUND FROM THE REACTION MIXTURE.
Claim 2
Dependent Claim
79 words
A PROCESS FOR PREPARING THE ALPHA AMINO DERIVATIVE OF AN AROMATIC COMPOUND CONTAINING A SOLE TERTIARY NITROGEN ATOM IN A CONJUGATELY UNSATURATED SIX-MEMBERED RING, WHEREIN SAID COMPOUND AT --10 TO 100* C. IS SUBJECTED TO THE ACTION OF CHLORAMINE WHEREBY THE HYDROGEN ON THE ANNULAR CARBON ATOM ATTACHED BY A DOUBLE BOND TO SAID TERTIARY NITROGEN IS REPLACED BY THE --NH2 GROUP OF SAID CHLORAMINE AND RECOVERING SAID ALPHA AMINO DERIVATIVE OF SAID AROMATIC COMPOUND FROM THE REACTION MIXTURE.
Claim 3
Dependent Claim
12 words
A PROCESS ACCORDING TO CLAIM 1 WHEREIN THE AROMATIC COMPOUND IS QUINOLINE.
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) | 1962-06-29 | 1962-12-29 | 1963-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-29 | 1966-12-29 | 1967-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-29 | 1970-12-29 | 1971-06-30 | $7700.00 | Window Closed / Lapsed |