US2601323A
Expired / Lapsed
US
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Process for preparing 4, 4-diphenyl-6-dimethylamino-heptanone-3
Assignee: Pharmacia and Upjohn Co
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Filing: 1949-02-02
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Granted: 1952-06-24
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Expires: 1969-02-02
Abstract
No abstract record available.
Inventors
- 👤 Jr William Bradley Reid
- 👤 Schneider Alexander William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:58
CPC Classifications
C; C07; C07C; C07C215/00; C07C215/46; C07C215/48; C07C215/54; C07C225/00; C07C225/02; C07C225/14; C07C225/16; C07C253/00; C07C253/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN A PROCESS FOR THE PREPARATION OF A CONPOUND SELECTED FROM THE GROUP CONSISTING OF 4,4DIPHENYL-6-DIMETHYLAMINOHEPTANONE-3 AND ACID ADDITION SALTS THEREOF BY THE HYDROLYSIS OF A 2DIMETHYLAMINOPROPYL-DIPHENYLACETONITRILE - ETHYL-MAGNESIUM-HALIDE COMPLEX, WHEREIN THE HALOGEN IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE, AND IODINE, THE IMPROVEMENT WHICH COMPRISES: ADDING AN AQUEOUS MINERAL ACID TO THE 2-DIMETHYLAMINOPROPYL-DIPHENYLACETONITRILE - ETHYL - MAGNESIUM - HALIDE COMPLEX WITHOUT COOLING SAID COMPLEX DURING THE SAID ADDITION.
Claim 2
Dependent Claim
71 words
IN A PROCESS FOR THE PREPARATION OF A CONPOUND SELECTED FROM THE GROUP CONSISTING OF 4,4DIPHENYL-6-DIMETHYLAMINOHEPTANONE-3 AND ACID ADDITION SALTS THEREOF BY THE HYDROLYSIS OF A 2DIMETHYLAMINOPROPYL-DIPHENYLACETONITRILE - ETHYL-MAGNESIUM-HALIDE COMPLEX, WHEREIN THE HALOGEN IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE, AND IODINE, THE IMPROVEMENT WHICH COMPRISES: ADDING AN AQUEOUS MINERAL ACID TO THE 2-DIMETHYLAMINOPROPYL-DIPHENYLACETONITRILE - ETHYL - MAGNESIUM - HALIDE COMPLEX WITHOUT COOLING SAID COMPLEX DURING THE SAID ADDITION.
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) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |