Patent US3392921A successfully refreshed from Google Patents.
Patent US3872120A successfully refreshed from Google Patents.
US3872120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of 1,3-dialkanoyl hexahydropyrimidine
Assignee: United States Department of Agriculture
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Filing: 1974-03-04
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Granted: 1975-03-18
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Expires: 1994-03-04
Abstract
Abstract 1,3-Diacyl imidazolidines and hexahydropyrimidines were prepared by the reaction of formaldehyde and an N,N''-alkylenebisamide in the presence of a strong acid catalyst, the substituent acyl groups being acetyl, butyryl, pentanoyl, hexanoyl, heptanoyl, octanoyl, nonanoyl, decanoyl, palmitoyl, stearoyl, and oleoyl. These compounds exhibit antimycotic activity.
Inventors
- 👤 Robert R Mod
- 👤 Frank C Magne
- 👤 Gene Sumrell
- 👤 Arthur F Novak
- 👤 James M Solar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:57
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/04; C07D233/00; C07D233/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
10 words
A PROCESS FOR PREPARING A COMPOUND REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
10 words
A PROCESS FOR PREPARING A COMPOUND REPRESENTED BY THE FORMULA
Claim 3
Dependent Claim
32 words
The process of claim 1 wherein acetic acid is used as a solvent, hydrochloric acid is the catalyst, and the reaction is carried out at a temperature from ambient to about 100*C.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |