US3141041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of substituted acetamides
Assignee: Eli Lilly and Co
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Filing: 1962-06-06
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Granted: 1964-07-14
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Expires: 1982-06-06
Abstract
No abstract record available.
Inventors
- 👤 Harold M Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:51
CPC Classifications
C; C07; C07C; C07C233/00; C07F; C07F1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
THE PROCESS WHICH COMPRISES COMMINUTING AN ALKALI METAL WITH A DIPHENYLMETHANE IN A TUMBLING MILL AT A TEMPERATURE BELOW ABOUT 200*C. FOR A TIME SUFFICIENT TO EFFECT REACTION THEREOF, SAID DIPHENYLMETHANE HAVING AT LEAST ONE REPLACEABLE HYDROGEN ATOM ATTACHED TO THE METHANE CARBON ATOM, WHEREBY THE CORRESPONDING ALKALIMETALLO-DIPHENYLMETHANE IS OBTAINED, AND COMMINGLING SAID ALKALI-METALLO-DIPHENYLMETHANE WITH AN N,N-DI(LOWER-ALKYL) CARBAMYL HALIDE, WHEREBY SAID SUBSTANCES ARE CAUSED TO REACT AND WHEREBY THE CORRESPONDING N,N-DI(LOWER-ALKYL) DIPHENYLACETAMIDE IS OBTAINED.
Claim 2
Dependent Claim
74 words
THE PROCESS WHICH COMPRISES COMMINUTING AN ALKALI METAL WITH A DIPHENYLMETHANE IN A TUMBLING MILL AT A TEMPERATURE BELOW ABOUT 200*C. FOR A TIME SUFFICIENT TO EFFECT REACTION THEREOF, SAID DIPHENYLMETHANE HAVING AT LEAST ONE REPLACEABLE HYDROGEN ATOM ATTACHED TO THE METHANE CARBON ATOM, WHEREBY THE CORRESPONDING ALKALIMETALLO-DIPHENYLMETHANE IS OBTAINED, AND COMMINGLING SAID ALKALI-METALLO-DIPHENYLMETHANE WITH AN N,N-DI(LOWER-ALKYL) CARBAMYL HALIDE, WHEREBY SAID SUBSTANCES ARE CAUSED TO REACT AND WHEREBY THE CORRESPONDING N,N-DI(LOWER-ALKYL) DIPHENYLACETAMIDE IS OBTAINED.
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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |