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US3670010A Expired / Lapsed US ⏱️ 0.0 years remaining

Trifluoromethyl acylated urea carbamates

Assignee: Stauffer Chemical Co
•
Filing: 1969-05-06
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Granted: 1972-06-13
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Expires: 1989-05-06
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Abstract

Abstract Acylated urea carbamate compounds having the formula IN WHICH R1 and R3 are independently selected from an alkyl radical of from 1 to about 8 carbon atoms, inclusive, cyclohexyl, lower alkenyl of from about 3 to about 4 carbon atoms, inclusive, phenyl and substituted phenyl in which the substituents are lower alkyl, lower alkoxy, nitro and halogen; R and R2 are independently selected from hydrogen, alkyl of from 1 to about 8 carbon atoms, inclusive, cyclohexyl, lower alkenyl of from about 3 to about 4 carbon atoms, inclusive, and trifluoroacetyl; provided that at least one of R or R2 is trifluoroacetyl; and R4 is selected from hydrogen, methyl or when only one of R or R2 is trifluoroacetyl then R4 can be trifluoroacetyl. These compounds are prepared by the reaction of an appropriate carbamoyloxyphenyl urea and trifluoroacetic anhydride. The compounds are useful as herbicides.

Inventors

  • 👤 Eugene G Teach

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 22:24
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/28; C07C275/32; C07C275/34; C07C275/46; C07C275/48; C07C275/50

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 7 words
Acylated urea carbamate compounds having the formula
Claim 2
Dependent Claim 24 words
A compound according to claim 2 in which R is trifluoroacetyl, R1 is methyl, R2 is hydrogen, R3 is methyl and R4 is hydrogen.
Claim 3
Dependent Claim 24 words
A compound according to claim 2 in which R is trifluoroacetyl, R2 is trifluoroacetyl, R1 is methyl, R3 is methyl and R4 is hydrogen.

References Cited (Backward Citations)

US3434822A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-06-13 1975-12-13 1976-06-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-06-13 1979-12-13 1980-06-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-06-13 1983-12-13 1984-06-13 $7700.00 Window Closed / Lapsed

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