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US4087422A Expired / Lapsed US ⏱️ 0.0 years remaining

Pesticidal dihydrotetrazolo[1,5-a]quinazolines

Assignee: Imperial Chemical Industries Ltd
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Filing: 1977-06-13
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Granted: 1978-05-02
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Expires: 1997-06-13
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Abstract

Abstract Dihydrotetrazolo [1,5-a] quinazolines having the formula: <IMAGE> wherein (a) n is 0, X is oxygen, and R is optionally unsubstituted alkyl, alkenyl of at least 4 carbon atoms, alkynyl, aryl, aralkyl, alkylthio, cycloalkyl, amino or substituted aryl; or (b) n is 1 or 2, X is oxygen, R is hydrogen, or optionally-substituted alkyl, alkenyl, alkynyl, aryl, aralkyl, alkylthio, cycloalkyl, or amino, and R1 is hydroxy, halogen, nitro, alkyl or alkoxy or (c) n is 0, 1 or 2, X is sulphur, R is hydrogen, or optionally-substituted alkyl, alkenyl, alkynyl, aryl, aralkyl, alkylthio, cycloalkyl, or amino, and R1 is hydroxy, halogen, nitro, alkyl or alkoxy; or (d) n is 0, 1 or 2, X is NR2 where R2 is hydrogen, alkyl having 1 to 10 carbon atoms, benzyl or hydroxyalkyl, R is optionally-substituted alkyl, alkenyl, alkynyl, aryl, aralkyl, alkylthio, cycloalkyl, or amino, and R1 is hydroxy, halogen, nitro, alkyl or alkoxy; and salts thereof. These compounds demonstrate pesticidal activity.

Inventors

  • 👤 Raymond Alexander Bowie
  • 👤 John Michael Cox
  • 👤 Gordon Michael Farrell
  • 👤 Margaret Claire Shephard

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 13:03
CPC Classifications
C; C07; C07D; C07D487/00; A; A01; A01N; A01N43/00; A01N43/90; C07D487/02; C07D487/04

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 15 words
The compound having the structural formula: ##STR43## and chemical name: 4 methyl-4,5-dihydro tetrazol [1,5-a] quinazolin-5-one.
Claim 2
Dependent Claim 15 words
The compound having the structural formula: ##STR43## and chemical name: 4 methyl-4,5-dihydro tetrazol [1,5-a] quinazolin-5-one.
Claim 3
Dependent Claim 13 words
The compound having the structural formula: ##STR44## and chemical name: 4-methyl-4,5-dihydrotetrazolo [1,5-a] quinazolin-5-thione.
Claim 4
Dependent Claim 13 words
The compound having the structural formula: ##STR44## and chemical name: 4-methyl-4,5-dihydrotetrazolo [1,5-a] quinazolin-5-thione.

References Cited (Backward Citations)

US3045015A Cited
US3835137A Cited
US3835138A Cited
US3838126A Cited
US4002755A Cited
US3920654A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-05-01 1981-10-31 1982-05-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-05-01 1985-10-31 1986-05-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-05-01 1989-10-31 1990-05-02 $7700.00 Window Closed / Lapsed

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