Patent US3753678A successfully refreshed from Google Patents.
US3753678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted dioxanes as herbicides
Assignee: FMC Corp
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Filing: 1972-02-09
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Granted: 1973-08-21
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Expires: 1992-02-09
Abstract
Abstract Herbicidal compositions containing compounds of the formula WHERE R2 is hydrogen, hydrocarbyl or substituted hydrocarbyl radical; R2a is hydrogen or methyl and R2 and R2a may together form a ring; R5 is hydrogen, alkyl, haloalkyl or cyanoalkyl; Rr is aryl, substituted aryl or heterocyclyl.
Inventors
- 👤 Young S Tyler
- 👤 K Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:29
CPC Classifications
C; C07; C07D; C07D319/00; C07D319/04; C07D319/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
22 words
Method as in claim 1, in which Rr is a phenyl radical having at least one non-hydrogen substituent in an ortho position.
Claim 2
Dependent Claim
22 words
Method as in claim 1 in which R2 is a phenyl radical having at least one non-hydrogen substituent in a meta position.
Claim 3
Dependent Claim
10 words
Method as in claim 1 in which R2a is hydrogen.
Claim 4
Dependent Claim
15 words
Method as in claim 1 in which R2 is aromatic and has a fluoro substituent.
Claim 5
Dependent Claim
18 words
Method as in claim 2 in which said phenyl radical has a fluoro substituent in an ortho position.
Claim 6
Dependent Claim
18 words
Method as in claim 2 in which said phenyl radical has a chloro substituent in an ortho position.
Claim 7
Dependent Claim
18 words
Method as in claim 2 in which said phenyl radical has a methyl substituent in an ortho position.
Claim 8
Dependent Claim
36 words
The method as in claim 1 in which the compound is cis-5-benzyloxy-2-phenyl-1,3-dioxane; cis-5-(2-fluorobenzyloxy)-2-phenyl-1,3-dioxane; cis-5-(2-methylbenzyloxy)-2-phenyl-1,3-dioxane; cis-5-benzyloxy-2-(3-chlorophenyl)-1,3-dioxane; 5-benzyloxy-1,3-dioxane; cis-5-benzyloxy-2-(2-fluorophenyl)-1,3-dioxane; cis-5-(4-methylbenzyloxy)-2-phenyl-1,3-dioxane; cis-5-(2-bromobenzyloxy)-2-phenyl-1,3-dioxane; cis-5-(4-fluorobenzyloxy)-2-phenyl-1,3-dioxane; cis-5-(3-fluorobenzyloxy)-2-phenyl-1,3-dioxane; cis-5-(2,6-dichlorobenzyloxy)-2-phenyl-1,3-dioxane; cis-5-(2-chlorobenzyloxy)-2-phenyl-1,3-dioxane; cis-5-benzyloxy-2-(3-fluorophenyl)-1,3-dioxane; cis-5-(2-fluorobenzyloxy)-2-(3-fluorophenyl)-1,3-dioxane; cis-5-(2-fluorobenzyloxy)-2-(3-methylphenyl)-1,3-dioxane; cis-5-(2-fluorobenzyloxy)-2-(3-chlorophenyl)-1,3-dioxane; cis-5-benzyloxy-2-(3-benzyloxyphenyl)-1,3-dioxane; cis-5-benzyloxy-2-(3-methoxyphenyl)-1,3-dioxane; cis-2-(3-chlorophenyl)-5-(2-methylbenzyloxy)-1,3-dioxane; r-2-chloromethyl-c-5-(2-fluorobenzyloxy)-5-methyl-1,3-dioxane; r-2-ethyl-c-5-(2-fluorobenzyloxy)-5-methyl-1,3-dioxane; r-2-ethyl-c-5-(2-methylbenzyloxy)-5-methyl-1,3-dioxane; r-2-ethyl-5-methyl-c-5-(2-methylbenzyloxy)-1,3-dioxane; or cis-5-(2-fluorobenzyloxy)-2-(2-furyl)-1,3-dioxane.
Claim 9
Dependent Claim
41 words
Method of claim 1 in which R2a is hydrogen and in which each of the substituents R2, R5 and Rr has a molecular weight below 125 when it is aliphatic and a molecular weight below 190 when it contains a ring.
Claim 10
Dependent Claim
22 words
Method as in claim 1 in which the compound is applied as a preemergence treatment to the soil of a soybean field.
Claim 11
Dependent Claim
22 words
Method as in claim 1 in which the compound is applied as a preemergence treatment to the soil of a cotton field.
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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 |