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US3984435A Expired / Lapsed US ⏱️ 0.0 years remaining

Herbicidal N-substituted-Δ1 -tetrahydrophthalimide

Assignee: Mitsubishi Chemical Corp
•
Filing: 1975-02-10
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Granted: 1976-10-05
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Expires: 1995-02-10
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Abstract

Abstract A DELTA 1 - tetrahydrophthalic anhydride is reacted with an amine in the presence of lower fatty acid. Alternatively N-(4-hydroxyphenyl)- DELTA 1-tetrahydrophthalimide or a salt thereof is reacted with an aralkyl halide. A N-substituted- DELTA 1-tetrahydrophthalimide compound having herbicidal activity is produced. This compound has the formula O PARALLEL C ANGLE N-R1 C PARALLEL O wherein R' is naphthyl; phenyl; phenyl substituted by 1-3 substituents selected from the group consisting of halogen, nitro, cyano, thiocyano, carboxyl, haloalkyl, lower alkyl and alkylthio; -CH2Y wherein Y is phenyl, naphthyl or phenyl substituted by 1-5 substituents selected from the group consisting of halogen, nitro, lower alkyl and lower alkoxyl; or WHEREIN Z is phenyl, naphthyl, or phenyl substituted by at least one substituent selected from the group consisting of halogen, nitro, lower alkyl and lower alkoxyl.

Inventors

  • 👤 Kazuo Matsui
  • 👤 Hiroshi Kasugai
  • 👤 Kuni Matsuya
  • 👤 Hiroyasu Aizawa

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 14:02
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 32 words
An N-substituted-Δ 1 -tetrahydrophthalimide represented by the formula ##SPC20## in which Z is phenyl, naphthyl or phenyl substituted by one or two substituents selected from halogen, nitro-, lower alkyl-, or lower alkoxy.
Claim 2
Dependent Claim 32 words
An N-substituted-Δ 1 -tetrahydrophthalimide represented by the formula ##SPC20## in which Z is phenyl, naphthyl or phenyl substituted by one or two substituents selected from halogen, nitro-, lower alkyl-, or lower alkoxy.
Claim 3
Dependent Claim 12 words
The compound as defined in claim 1 in which Z is 4-halophenyl.
Claim 4
Dependent Claim 13 words
The compound as defined in claim 1 in which Z is 4-alkyl phenyl.
Claim 5
Dependent Claim 12 words
The compound as defined in claim 2 in which 4-halophenyl is 4-chlorophenyl.
Claim 6
Dependent Claim 12 words
The compound as defined in claim 3 in which 4-alkylphenyl is 4-methylphenyl.
Claim 7
Dependent Claim 12 words
The compound as defined in claim 3 in which 4-alkylphenyl is 4-ethylphenyl.

References Cited (Backward Citations)

US3745170A Cited
US3766218A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-10-05 1980-04-05 1980-10-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-10-05 1984-04-05 1984-10-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-10-05 1988-04-05 1988-10-05 $7700.00 Window Closed / Lapsed

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