US2921940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grignard preparation of certain hydroxy compounds
Assignee: Primerica Inc
•
Filing: 1955-11-28
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Granted: 1960-01-19
•
Expires: 1975-11-28
Abstract
No abstract record available.
Inventors
- 👤 Hugh E Ramsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:11
CPC Classifications
C; C07; C07B; C07B49/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
115 words
A PROCESS COMPRISING REACTING A COMPOUND SELECTED FROM THE CLASS CONSISTING OF ACETALDEHYDE, BUTYRALDEHYDE, BENZALDEHYDE, TRIOXYMETHYLENE, ACETONE, CYCLOHEXANONE, ACETOPHENONE, BENZALACENTONE, DIBENZALACETONE, CROTONALDEHYDE, AND B-IONONE WITH AN ORGANOMAGNESIUM CHLORIDE IN THE PRESENCE OF COMPOUND Q, SAID ORGANOMAGNESIUM CHLORIDE CHLORIDE BEING PREPARED BY REACTING AN ORGANIC CHLORIDE OF THE FORMULA RCL, WHEREIN R IS SELECTED FROM THE CLASS CONSISTING OF ARYL, VINYL AND AROMATIC-HETEROCYCLIC RADICALS, WITH MAGNESIUM IN COMPOUND Q, WHEREIN SAID COMPOUND Q IS SELECTED FROM THE CLASS CONSISTING OF TETRAHYDROFUR, TETRAHYDROPYRAN, 2-ETHOXYTETRAHYDROPYRAN, DIHYDROPYRAN, TETRAHYDROFURFURYL ETHYL ETHER, AND 2-METHYL TETRAHYDROFURAN, AND WHEREIN SAID AROMATIC-HETEROCYCLIC RADICAL IS SELECTED FROM THE CLASS CONSISTING OF A-THIENYL, A-PYRIDYL, 2-QUINOLYL, 6-QUINOLYL, 8-QUINOLYL, 2-BENZOXAZOLYL, 2-BENZOTHIAZOLYL, 2-METHYLBENZOTHIAZOL-5-YL, 6CHLORO-2-METHOXY-ACRID-4YL, 4-CHLORO-6-PYRIMIDYL, AFURYL, 2,5-THIOPHENDIYL AND 2-CHLORO-5-THIENYL.
Claim 2
Dependent Claim
115 words
A PROCESS COMPRISING REACTING A COMPOUND SELECTED FROM THE CLASS CONSISTING OF ACETALDEHYDE, BUTYRALDEHYDE, BENZALDEHYDE, TRIOXYMETHYLENE, ACETONE, CYCLOHEXANONE, ACETOPHENONE, BENZALACENTONE, DIBENZALACETONE, CROTONALDEHYDE, AND B-IONONE WITH AN ORGANOMAGNESIUM CHLORIDE IN THE PRESENCE OF COMPOUND Q, SAID ORGANOMAGNESIUM CHLORIDE CHLORIDE BEING PREPARED BY REACTING AN ORGANIC CHLORIDE OF THE FORMULA RCL, WHEREIN R IS SELECTED FROM THE CLASS CONSISTING OF ARYL, VINYL AND AROMATIC-HETEROCYCLIC RADICALS, WITH MAGNESIUM IN COMPOUND Q, WHEREIN SAID COMPOUND Q IS SELECTED FROM THE CLASS CONSISTING OF TETRAHYDROFUR, TETRAHYDROPYRAN, 2-ETHOXYTETRAHYDROPYRAN, DIHYDROPYRAN, TETRAHYDROFURFURYL ETHYL ETHER, AND 2-METHYL TETRAHYDROFURAN, AND WHEREIN SAID AROMATIC-HETEROCYCLIC RADICAL IS SELECTED FROM THE CLASS CONSISTING OF A-THIENYL, A-PYRIDYL, 2-QUINOLYL, 6-QUINOLYL, 8-QUINOLYL, 2-BENZOXAZOLYL, 2-BENZOTHIAZOLYL, 2-METHYLBENZOTHIAZOL-5-YL, 6CHLORO-2-METHOXY-ACRID-4YL, 4-CHLORO-6-PYRIMIDYL, AFURYL, 2,5-THIOPHENDIYL AND 2-CHLORO-5-THIENYL.
Claim 3
Dependent Claim
13 words
THE PROCESS ACCORDING TO CHAIN 1 IN WHICH R IS THE PYRIDYL RADICAL.
Claim 4
Dependent Claim
13 words
THE PROCESS ACCORDING TO CHAIN 1 IN WHICH R IS THE PYRIDYL RADICAL.
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) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |