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US3755339A Expired / Lapsed US ⏱️ 0.0 years remaining

Esters of aminohalopyridyloxy acids

Assignee: Dow Chemical Co
•
Filing: 1971-07-26
•
Granted: 1973-08-28
•
Expires: 1991-07-26
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Abstract

Abstract Compounds corresponding to the formula WHEREIN X represents chloro, bromo, or fluoro; R represents alkyl of one to 12 carbon atoms or a radical having the formula (CH2)nOR3 wherein n represents an integer of from 2 to 4 and R3 represents lower alkyl of one to four carbon atoms or phenyl; M represents hydrogen or methyl; R1 represents hydrogen, loweralkyl of one to four carbon atoms, amino or loweralkylamino of one to four carbon atoms; and R2 represents hydrogen, X, loweralkyl, amino or loweralkylamino, with the proviso that one of R1 or R2 is always amino or loweralkylamino and the other of R1 and R2 is always other than amino or loweralkylamino are prepared. These compounds are useful as herbicides and as active agents in compositions used as herbicides.

Inventors

  • 👤 Kendry L Mc

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 07:11
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/73; C07D213/74

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 10 words
The compound of claim 1 which is 4-Amino-3,5-dichloro-2-(pyridyloxy)acetic acid:methyl ester.
Claim 2
Dependent Claim 10 words
The compound of claim 1 which is 4-Amino-3,5-dichloro-2-(pyridyloxy)acetic acid:ethyl ester.
Claim 3
Dependent Claim 10 words
The compound of claim 1 which is 4-Amino-3,5-dichloro-2-(pyridyloxy)acetic acid:butyl ester.
Claim 4
Dependent Claim 10 words
The compound of claim 1 which is 2-(4-Amino-3,5-dichloro-2-(pyridyloxy))propionic acid:ethyl ester.
Claim 5
Dependent Claim 10 words
The compound of claim 1 which is 4-Amino-3,5,6-trichloro-2-(pyridyloxy)acetic acid:ethyl ester.

References Cited (Backward Citations)

US3249619A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-08-27 1977-02-26 1977-08-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-08-27 1981-02-26 1981-08-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-08-27 1985-02-26 1985-08-28 $7700.00 Window Closed / Lapsed

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