US3753680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arylidene semicarbazones and their utility as herbicides
Assignee: Zeneca Inc
•
Filing: 1970-05-14
•
Granted: 1973-08-21
•
Expires: 1990-05-14
Abstract
Abstract Substituted-arylidene semicarbazone having the formula: IN WHICH Z represents oxygen, X represents halogen, lower alkoxy, lower alkyl, hydroxyl, nitro, cyano, N-allylcarbamoyloxy, lower-dialkylthiophos-phoryloxy, N-lower alkylcarbamoyloxy, lower dialkylamino, or (CH3)3N I ; n represents an integer of from 0 to 3, inclusive; R represents hydrogen or lower alkyl; R1 represents hydrogen or lower alkyl; R2 represents, lower alkyl or allyl; R3 represents hydrogen, alkyl, allyl, furfuryl, tetrahydrofurfuryl, lower alkoxy lower alkyl, cyclohexyl, 2-chloroallyl, phenyl, benzyl, or substituted-phenyl in which the substituents are chloro or nitro; R2 and R3 when taken together represent an alkylene containing four to six carbon atoms, inclusive or lower alkyl substituted alkylene containing five to eight carbon atoms, inclusive. The compounds are useful as herbicides.
Inventors
- 👤 H Tilles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:15
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/56; C07D307/66; C07D307/04; C07D307/18; C07D307/22; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/18
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
30 words
A method according to claim 1 in which X is lower alkyl, R is hydrogen, R1 is lower alkyl, R2 is hYdrogen, R3 is lower alkyl and n is 1.
Claim 2
Dependent Claim
18 words
A method according to claim 2 in which X is 4-methyl, R1 is methyl and R3 is n-butyl.
Claim 3
Dependent Claim
18 words
A method according to claim 2 in which X is 4-methyl, R1 is methyl and R3 is t-butyl.
Claim 4
Dependent Claim
18 words
A method according to claim 2 in which X is 4-methyl, R1 is methyl and R3 is methyl.
Claim 5
Dependent Claim
18 words
A method according to claim 2 in which X is 4-methyl, R1 is methyl and R3 is ethyl.
Claim 6
Dependent Claim
18 words
A method according to claim 2 in which X is 4-methyl, R1 is methyl and R3 is isopropyl.
Claim 7
Dependent Claim
18 words
A method according to claim 2 in which X is 2-methyl, R1 is methyl and R3 is isopropyl.
Claim 8
Dependent Claim
18 words
A method according to claim 2 in which X is 2-methyl, R1 is methyl and R3 is t-butyl.
Claim 9
Dependent Claim
26 words
A method according to claim 1 in which n is 0, R is hydrogen, R1 is lower alkyl, R2 is hydrogen and R3 is lower alkyl.
Claim 10
Dependent Claim
15 words
A method according to claim 10 in which R1 is methyl and R3 is t-butyl.
Claim 11
Dependent Claim
15 words
A method according to claim 10 in which R1 is methyl and R3 is t-butyl.
Claim 12
Dependent Claim
29 words
A method according to claim 1 in which X is chlorine, R is hydrogen, R1 is lower alkyl, R2 is hydrogen, R3 is lower alkyl and n is 1.
Claim 13
Dependent Claim
21 words
A method according to claim 13 in which the chlorine is in the 4-position, R1 is methyl and R3 is methyl.
Claim 14
Dependent Claim
21 words
A method according to claim 13 in which the chlorine is in the 4-position, R1 is methyl and R3 is t-butyl.
Claim 15
Dependent Claim
21 words
A method according to claim 13 in which the chlorine is in the 2-position, R1 is methyl and R3 is t-butyl.
Claim 16
Dependent Claim
21 words
A method according to claim 13 in which the chlorine is in the 4-position, R1 is methyl and R3 is isopropyl.
Claim 17
Dependent Claim
21 words
A method according to claim 13 in which the chlorine is in the 2-position, R1 is methyl and R3 is isopropyl.
Claim 18
Dependent Claim
21 words
A method according to claim 13 in which the chlorine is in the 3-position, R1 is methyl and R3 is t-butyl.
Claim 19
Dependent Claim
21 words
A method according to claim 13 in which the chlorine is in the 3-position, R1 is methyl and R3 is isopropyl.
Claim 20
Dependent Claim
21 words
A method according to claim 13 in which the chlorine is in the 2-position, R1 is methyl and R3 is ethyl.
Claim 21
Dependent Claim
21 words
A method according to claim 13 in which the chlorine is in the 2-position, R1 is methyl and R3 is methyl.
Claim 22
Dependent Claim
21 words
A method according to claim 13 in which the chlorine is in the 2-position, R1 is methyl and R3 is n-propyl.
Claim 23
Dependent Claim
21 words
A method according to claim 13 in which the chlorine is in the 2-position, R1 is methyl and R3 is n-butyl.
Claim 24
Dependent Claim
21 words
A method according to claim 13 in which the chlorine is in the 2-position, R1 is n-butyl and R3 is isopropyl.
Claim 25
Dependent Claim
21 words
A method according to claim 13 in which the chlorine is in the 2-position, R1 is n-butyl and R3 is t-butyl.
Claim 26
Dependent Claim
21 words
A method according to claim 13 in which the chlorine is in the 2-position, R1 is n-butyl and R3 is methyl.
Claim 27
Dependent Claim
30 words
A method according to claim 1 in which X is lower alkoxy, R is hydrogen, R1 is lower alkyl, R2 is hydrogen, R3 is lower alkyl and n is 1.
Claim 28
Dependent Claim
18 words
A method according to claim 2 in which X is 4-methoxy, R1 is methyl and R3 is t-butyl.
Claim 29
Dependent Claim
18 words
A method according to claim 28 in which X is 4-methoxy, R1 is methyl, and R3 is isopropyl.
Claim 30
Dependent Claim
18 words
A method according to claim 28 in which X is 2-methoxy, R1 is methyl and R3 is t-butyl.
Claim 31
Dependent Claim
30 words
A method according to claim 1 in which X is lower alkoxy, R is hydrogen, R1 is lower alkyl, R2 is hydrogen, R3 is lower alkyl and n is 2.
Claim 32
Dependent Claim
18 words
A method according to claim 32 in which X is 3,4-dimethoxy, R1 is methyl and R3 is t-butyl
Claim 33
Dependent Claim
18 words
A method according to claim 32 in which X is 3,4-dimethoxy, R1 is methyl and R3 is isopropyl.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |