Patent US6400722B1 successfully refreshed from Google Patents.
US4120871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
5-Organosulfonyl, 5-organosulfinyl or 5-haloalkanoyl-benzofuran-2-ones
Assignee: Bayer CropScience Ltd
•
Filing: 1977-07-11
•
Granted: 1978-10-17
•
Expires: 1997-07-11
Abstract
Abstract 2,3-Dihydro-benzofuranyl-5-esters, particularly esters of alkyl sulphonic acid, which possess physiological activity, being particularly useful as herbicides and plant growth regulants.
Inventors
- 👤 Peter Stuart Gates
- 👤 John Gillon
- 👤 David Thomas Saggers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:33
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D307/78; C07D307/82; A; A01; A01N; A01N43/00; A01N43/02; A01N43/04; A01N43/06; A01N43/12; C07D307/83
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
162 words
A benzofuranyl compound of the formula: ##STR6## wherein R 1 and R 2 are the same or different and are selected from the group consisting of hydrogen and alkyl of 1-6 carbon atoms; R 5 is selected from the group consisting of R 8 CO--, R 9 SO 2 -- and R 9 SO--, in which R 8 is halogen substituted alkyl of 1-4 carbon atoms, and R 9 is selected from the group consisting of (a) alkyl of 1-4 carbon atoms, (b) substituted alkyl of 1-4 carbon atoms wherein the substituent is selected from the group of halogen and alkoxy of 1-6 carbon atoms, (c) phenyl and (d) phenyl substituted by a member of the group of halogen and alkyl of 1-4 carbon atoms and R 10 , R 11 and R 12 are the same or difference and are selected from the group consisting of hydrogen, alkyl of 1-4 carbon atoms, halogen, cyano, acetyl and alkoxy of 1-4 carbon atoms.
Claim 2
Dependent Claim
162 words
A benzofuranyl compound of the formula: ##STR6## wherein R 1 and R 2 are the same or different and are selected from the group consisting of hydrogen and alkyl of 1-6 carbon atoms; R 5 is selected from the group consisting of R 8 CO--, R 9 SO 2 -- and R 9 SO--, in which R 8 is halogen substituted alkyl of 1-4 carbon atoms, and R 9 is selected from the group consisting of (a) alkyl of 1-4 carbon atoms, (b) substituted alkyl of 1-4 carbon atoms wherein the substituent is selected from the group of halogen and alkoxy of 1-6 carbon atoms, (c) phenyl and (d) phenyl substituted by a member of the group of halogen and alkyl of 1-4 carbon atoms and R 10 , R 11 and R 12 are the same or difference and are selected from the group consisting of hydrogen, alkyl of 1-4 carbon atoms, halogen, cyano, acetyl and alkoxy of 1-4 carbon atoms.
Claim 3
Dependent Claim
72 words
A compound according to claim 1 which is of the formula ##STR7## wherein R 22 and R 23 are selected from the group consisting of hydrogen and alkyl of 1-6 carbon atoms, R 25 represents R 30 SO 2 -- where R 30 is alkyl of 1-4 carbon atoms, R 24 , R 26 and R 27 are selected from the group consisting of hydrogen, halogen and alkyl of 1-4 carbon atoms.
Claim 4
Dependent Claim
13 words
A benzofuranyl compound according to claim 1, said compound being 2-oxo-2,3-dihydro-3,3-dimethyl benzofuran-5-yl methanesulphonate.
References Cited (Backward Citations)
US3184457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-16 | 1982-04-17 | 1982-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-16 | 1986-04-17 | 1986-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-16 | 1990-04-17 | 1990-10-17 | $7700.00 | Window Closed / Lapsed |