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US3625987A Expired / Lapsed US ⏱️ 0.0 years remaining

Cyano carbamoyloximes

Assignee: BASF Schweiz AG
•
Filing: 1967-11-07
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Granted: 1971-12-07
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Expires: 1987-11-07
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Abstract

Abstract The present invention relates to carbamates of the general formula IN WHICH R1 represents an alkoxy, aralkoxy, cycloalkoxy, aryloxy, alkylthio, aralkylthio, cycloalkylthio or arylthio radical, or in which R1 represents a secondary or tertiary amido group, R2 represents a hydrogen atom or a lower aliphatic radical and R3 represents a hydrogen atom, a lower aliphatic radical or an unsubstituted or substituted aryl radical. These compounds can be prepared by reaction of a cyanacetic acid ester or cyanacetic acid amide with an agent yielding nitrous acid and further reaction of the resulting oxime with either an isocyanate or a carbamic acid halide. The resulting carbamates are advantageously used as active substances for combating various kinds of pests, especially in preparaions for combating bacteria and fungi affecting animals and plants. Those separations may comprise, if desired, other known additives and pesticides.

Inventors

  • 👤 Adolf Hubele

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 21:49
CPC Classifications
C; C07; C07C; C07C255/00

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 30 words
A carbamate as claimed in claim 1 in which R3 is lower alkyl, chloroethyl, unsubstituted phenyl or substituted by at least one of chloro, bromo, trifluoromethyl, methyl, isobutoxy and nitro.
Claim 2
Dependent Claim 30 words
A carbamate as claiMed in claim 1 in which R1 is phenylamino substituted by at least one of chloro, bromo, nitro, trifluoromethyl and alkyl of at most four carbon atoms.
Claim 3
Dependent Claim 35 words
A carbamate as claimed in claim 1 wherein R1 is methoxy, ethoxy or cyclohexyloxy, R2 is hydrogen and R3 is phenylamino substituted by at least one and not more than two of chloro and trifluoromethyl.
Claim 4
Dependent Claim 10 words
A carbamate as claimed in claim 1 having the formula
Claim 5
Dependent Claim 10 words
A carbamate as claimed in claim 1 having the formula
Claim 6
Dependent Claim 10 words
A carbamate as claimed in claim 1 having the formula
Claim 7
Dependent Claim 10 words
A carbamate as claimed in claim 1 having the formula
Claim 8
Dependent Claim 10 words
A carbamate as claimed in claim 1 having the formula
Claim 9
Dependent Claim 10 words
A carbamate as claimed in claim 1 having the formula
Claim 10
Dependent Claim 10 words
A carbamate as claimed in claim 1 having the formula

References Cited (Backward Citations)

US2925434A Cited
US3256330A Cited
US3466316A Cited
US3328457A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-12-06 1975-06-07 1975-12-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-12-06 1979-06-07 1979-12-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-12-06 1983-06-07 1983-12-07 $7700.00 Window Closed / Lapsed

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