US2715119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of amides
Assignee: C.H. Boehringer Sohn AG and Co KG
•
Filing: 1951-03-15
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Granted: 1955-08-09
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Expires: 1971-03-15
Abstract
No abstract record available.
Inventors
- 👤 Wieland Theodor
- 👤 Sehring Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:57
CPC Classifications
C; C07; C07K; C07K1/00; C07K1/06; C07K1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
THE METHOD OF PRODUCING ORGANIC AMIDES WHICH COMPRISES REACTING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIA AND AMINES OF THE FORMULA ZNH2 AND (Z)2NH WHEREIN Z IS A HYDROCARBON RADICAL, WITH A MIXED EXTERNAL ANHYDRIDE FORMED BY A MONOCARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF LOWER ALKANOIC ACIDS, BENZOIC ACID, AND PHENYL LOWER ALKANOIC ACIDS HAVING AT LEAST TWO CARBON ATOMS IN THEIR MOLECULE AND A COMPOUND SELECCTED FROM THE GROUP CONSISTING OF MONOAMINO-MONOCARBOXYLIC ACIDS AND PEPTIDES HAVING AT LEAST ONE PETIDE GROUP IN THEIR MOLECULE, AND SEPARATING THE REACTION PRODUCT IN THE FORM OF THE DESIRED AMIDE FROM THE REACTION MASS.
Claim 2
Independent Claim
105 words
THE METHOD OF PRODUCING ORGANIC AMIDES WHICH COMPRISES REACTING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIA AND AMINES OF THE FORMULA ZNH2 AND (Z)2NH WHEREIN Z IS A HYDROCARBON RADICAL, WITH A MIXED EXTERNAL ANHYDRIDE FORMED BY A MONOCARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF LOWER ALKANOIC ACIDS, BENZOIC ACID, AND PHENYL LOWER ALKANOIC ACIDS HAVING AT LEAST TWO CARBON ATOMS IN THEIR MOLECULE AND A COMPOUND SELECCTED FROM THE GROUP CONSISTING OF MONOAMINO-MONOCARBOXYLIC ACIDS AND PEPTIDES HAVING AT LEAST ONE PETIDE GROUP IN THEIR MOLECULE, AND SEPARATING THE REACTION PRODUCT IN THE FORM OF THE DESIRED AMIDE FROM THE REACTION MASS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-08 | 1959-02-07 | 1959-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-08 | 1963-02-07 | 1963-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-08 | 1967-02-07 | 1967-08-09 | $7700.00 | Window Closed / Lapsed |