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US3920641A
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1H-pyrido(2,3-c or 4,3-c) (1,2,6)thiadiazin-4(3H)-one-2,2-dioxides
Assignee: Dow Chemical Co
•
Filing: 1973-11-05
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Granted: 1975-11-18
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Expires: 1993-11-05
Abstract
Abstract Disclosed are novel 1H-pyrido(2,3-c or 4,3-c) (1,2,6)thiadiazin4(3H)-one-2,2-dioxide compounds and derivatives thereof which are useful as herbicides. Novel intermediates used in the preparation of such compounds and derivatives are also disclosed.
Inventors
- 👤 Lennon H Mckendry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:57
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/79; C07D213/80; A; A01; A01N; A01N43/00; A01N43/90; C07D513/00; C07D513/02; C07D513/04
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULAE:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULAE:
Claim 3
Dependent Claim
9 words
The compound of claim 1 wherein R1 is loweralkyl.
Claim 4
Dependent Claim
13 words
The compound of claim 1 wherein n is 1 and X is loweralkyl.
Claim 5
Dependent Claim
13 words
The compound of claim 1 wherein X is halo and R1 is loweralkyl.
Claim 6
Dependent Claim
5 words
A compound of the formula:
Claim 7
Dependent Claim
5 words
A compound of the formula:
Claim 8
Dependent Claim
9 words
The compound of claim 5 wherein R1 is loweralkyl.
Claim 9
Dependent Claim
13 words
The compound of claim 5 wherein n is 1 and X is loweralkyl.
Claim 10
Dependent Claim
13 words
The compound of claim 5 wherein X is halo and R1 is loweralkyl.
Claim 11
Dependent Claim
5 words
A compound of the formula:
Claim 12
Dependent Claim
5 words
A compound of the formula:
Claim 13
Dependent Claim
9 words
The compound of claim 9 wherein R1 is loweralkyl.
Claim 14
Dependent Claim
13 words
The compound of claim 9 wherein n is 1 and X is loweralkyl.
Claim 15
Dependent Claim
13 words
The compound of claim 9 wherein X is halo and R1 is loweralkyl.
Claim 16
Dependent Claim
34 words
The compound of claim 9 wherein n is 1, X is loweralkyl of from 1 to about 4 carbon atoms and is substituted in the 7-ring position, R1 is loweralkyl and R2 is hydrogen.
Claim 17
Dependent Claim
19 words
The compound of claim 9 wherein n is 1, X is halo, R1 is loweralkyl and R2 is hydrogen.
Claim 18
Dependent Claim
8 words
The compound of claim 9 which is 3-(1-methylethyl)-1H-pyrido(2,3-c(1,2,6)thiadiazin-4(3H)-one-2,2-dioxide.
Claim 19
Dependent Claim
8 words
The compound of claim 9 which is 3-methyl-1H-pyrido(2,3-c)(1,2,6)thiadiazin-4(3H)-one-2,2-dioxide.
Claim 20
Dependent Claim
8 words
The compound of claim 9 which is 3-n-propyl-1H-pyrido(2,3-c)(1,2,6)thiadiazin-4(3H)-one-2,2-dioxide.
Claim 21
Dependent Claim
9 words
The compound of claim 9 which is 1-methyl-3-(1-methylethyl)-pyrido(2,3-c)(1,2,6)thiadiazin-4(3H)-one-2,2 -dioxide.
Claim 22
Dependent Claim
9 words
The compound of claim 9 which is 3-ethyl-1H-pyrido(2,3-c)(1, 2,6)thiadiazin-4(3H)-one-2,2-dioxide.
Claim 23
Dependent Claim
9 words
The compound of claim 9 which is 6-chloro-3-(1-methylethyl)-1H-pyrido(2,3-c)(1,2,6)thiadiazin-4(3H)-one-2,2 -dioxide.
Claim 24
Dependent Claim
9 words
The compound of claim 9 which is 7-methyl-3-(1-methylethyl)-1H-pyrido(2,3-c)(1,2,6)thiadiazin-4(3H)-one-2,2 -dioxide.
Claim 25
Dependent Claim
8 words
The compound of claim 9 which is 3-(1-methylethyl)-7-(2-methylpropyl)-1H-pyrido(2,3-c)(1,2,6)thiadiazin-4(3H)-one-2,2-dioxide.
Claim 26
Dependent Claim
8 words
The compound of claim 9 which is 3-(2-methylpropyl)-1H-pyrido(2,3-c)(1,2,6)thiadiazin-4(3H)-one-2,2-dioxide.
Claim 27
Dependent Claim
8 words
The compound of claim 9 which is 3-n-butyl-1H-pyrido(2,3-c)(1,2,6)thiadiazin-4(3H)-one-2,2-dioxide.
Claim 28
Dependent Claim
8 words
The compound of claim 9 which is 6-chloro-3-n-butyl-1H-pyrido(2,3-c)(1,2,6)thiadiazin-4(3H)-one-2,2-dioxide.
References Cited (Backward Citations)
US3819639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |