Patent US4000160A successfully refreshed from Google Patents.
US4000160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrrolyl oxyphenyl ketones
Assignee: STWB Inc
•
Filing: 1975-04-14
•
Granted: 1976-12-28
•
Expires: 1995-04-14
Abstract
Abstract 4,5-Dihalopyrrol-2-yl oxyphenyl ketones, prepared either by Friedel-Crafts condensation of a 4,5-dihalopyrrole-2-carboxylic acid halide with an appropriate hydroxy or lower-alkoxy-substituted benzene or by condensation of a hydroxy or lower-alkoxy-substituted benzaldehyde with pyrrole in the presence of sodium hydride followed by halogenation, with elemental chlorine or bromine, of the resulting pyrrol-2-yl oxyphenyl ketone, useful as antibacterial and antifungal agents.
Inventors
- 👤 Denis M. Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:57
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/32; C07D207/33; C07D207/333; C07D207/34
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
43 words
A compound having the formula: ##STR6## wherein X is chlorine or bromine, both values of X being identical; and two of R 1 , R 2 , R 3 and R 4 are either both hydroxy or both methoxy, the others being hydrogen.
Claim 2
Dependent Claim
43 words
A compound having the formula: ##STR6## wherein X is chlorine or bromine, both values of X being identical; and two of R 1 , R 2 , R 3 and R 4 are either both hydroxy or both methoxy, the others being hydrogen.
Claim 3
Dependent Claim
32 words
A compound according to claim 1 having the formula: ##STR7## wherein two of R 1 , R 3 and R 4 are either both hydroxy or both methoxy, the other being hydrogen.
Claim 4
Dependent Claim
76 words
A compound according to claim 1 having the formula: ##STR8## wherein (A) X is chlorine and either two of R 1 , R 2 , and R 3 and R 4 are methoxy, the others being hydrogen or R 1 and R 3 are each hydroxy and R 2 and R 4 are hydrogen and (B) X is bromine and R 1 and R 4 are each hydroxy and R 2 and R 3 are hydrogen.
Claim 5
Dependent Claim
22 words
A compound according to claim 1 wherein two of R 1 , R 2 , R 3 and R 4 are hydroxy.
Claim 6
Dependent Claim
22 words
A compound according to claim 1 wherein two of R 1 , R 2 , R 3 and R 4 are methoxy.
Claim 7
Dependent Claim
7 words
4,5-Dichloropyrrol-2-yl 2,4-dihydroxyphenyl ketone according to claim 2.
Claim 8
Dependent Claim
7 words
4,5-Dichloropyrrol-2-yl 2,5-dimethoxyphenyl ketone according to claim 2.
Claim 9
Dependent Claim
7 words
4,5-Dibromopyrrol-2-yl 2,5-dihydroxyphenyl ketone according to claim 3.
Claim 10
Dependent Claim
7 words
4,5-Dichloropyrrol-2-yl 3,4-dimethoxyphenyl ketone according to claim 3.
Claim 11
Dependent Claim
7 words
4,5-Dichloropyrrol-2-yl 2,5-dihydroxyphenyl ketone according to claim 2.
Claim 12
Dependent Claim
7 words
4,5-Dichloropyrrol-2-yl 2,4-dimethoxyphenyl ketone according to claim 5.
Claim 13
Dependent Claim
7 words
4,5-Dibromopyrrol-2-yl 2,5-dimethoxyphenyl ketone according to claim 5.
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) | 1979-12-28 | 1980-06-28 | 1980-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-28 | 1984-06-28 | 1984-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-28 | 1988-06-28 | 1988-12-28 | $7700.00 | Window Closed / Lapsed |