US3192230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing 1, 3, 3-trisubstituted-4-(beta-haloethyl)-2-pyrrolidinone
Assignee: AH Robins Co Inc
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Filing: 1961-02-09
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Granted: 1965-06-29
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Expires: 1981-02-09
Abstract
No abstract record available.
Inventors
- 👤 Carl D Lunsford
- 👤 Jr Albert D Cale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:35
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/04; C07D207/08; C07D207/18; C07D207/22; C07D207/24; C07D207/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A PROCESS FOR THE PRODUCTION OF A 1,3,3-TRISUBSTITUTED4-(BETA-HALO ETHYL)-2-PYRROLIDINONE WHICH COMPRISES MIXING AND REACTING TOGETHER AND ALPHA,ALPHA-DISUBSTITUTEDALPHA (N-SUBSTITUTED-3-PYRROLIDYL)-ACETIC ACID, WHEREIN THE SUBSTITUENTS AT THE ALPHA CARBON OF THE ACETIC ACID AND THE N-POSITION OF THE PYRROLIDYL RING ARE FREE OF INTERFERING GROUPS AND INDIVIDUALLY CONTAIN AT MOST FIFTEEN CARBON ATOMS INCLUSIVE, WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THIONYL HALIDES AND PHOSPHORUS HALIDES, TO PRODUCE THE DESIRED 1,3,3-TRISUBSTITUTED-4-(BETA-HALO ETHYL)-2-PYRROLIDINONE WHEREIN THE SUBSTITUENT IN THE 1 POSITION CORRESPONDS TO THAT IN THE N-POSITION OF THE STARTING ACETIC ACID, THE TWO SUBSTITUENTS IN THE 3-POSITION CORRESPOND TO THOSE IN THE ALPHA POSTION OF THE STARTING ACETIC ACID, AND THE HALOGEN IN THE BETA POSITION OF THE 4-ETHYL GROUP CORRESPONDS TO THE HALOGEN OF THE HALIDE EMPLOYED.
Claim 2
Dependent Claim
126 words
A PROCESS FOR THE PRODUCTION OF A 1,3,3-TRISUBSTITUTED4-(BETA-HALO ETHYL)-2-PYRROLIDINONE WHICH COMPRISES MIXING AND REACTING TOGETHER AND ALPHA,ALPHA-DISUBSTITUTEDALPHA (N-SUBSTITUTED-3-PYRROLIDYL)-ACETIC ACID, WHEREIN THE SUBSTITUENTS AT THE ALPHA CARBON OF THE ACETIC ACID AND THE N-POSITION OF THE PYRROLIDYL RING ARE FREE OF INTERFERING GROUPS AND INDIVIDUALLY CONTAIN AT MOST FIFTEEN CARBON ATOMS INCLUSIVE, WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THIONYL HALIDES AND PHOSPHORUS HALIDES, TO PRODUCE THE DESIRED 1,3,3-TRISUBSTITUTED-4-(BETA-HALO ETHYL)-2-PYRROLIDINONE WHEREIN THE SUBSTITUENT IN THE 1 POSITION CORRESPONDS TO THAT IN THE N-POSITION OF THE STARTING ACETIC ACID, THE TWO SUBSTITUENTS IN THE 3-POSITION CORRESPOND TO THOSE IN THE ALPHA POSTION OF THE STARTING ACETIC ACID, AND THE HALOGEN IN THE BETA POSITION OF THE 4-ETHYL GROUP CORRESPONDS TO THE HALOGEN OF THE HALIDE EMPLOYED.
References Cited (Backward Citations)
US2826588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |