C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
71/7.25, 260/280
C07D 405/12 (2006.01) A01N 43/34 (2006.01) A01N 43/36 (2006.01) A01N 43/40 (2006.01) C07D 213/89 (2006.01)
Patent
CA 1140553
ABSTRACT OF THE DISCLOSURE Novel tetrahydrofuran derivatives which are compounds of the general formula I or the N-oxides or salts thereof (I) Image wherein each of R1 and R2 independently represents a hydrogen atom, a halogen atom, or an optionally-substituted alkyl, cyclo- alkyl or aryl group, or R1 and R2 together represent an optionally-substituted alkylene group; each of R3 and R4 independently represents a hydrogen atom, a halogen atom, a mono- or di- alkylamino group or an optionally-substituted alkyl, alkoxy, alkylthio or aryl group and each of R5 and R6 represents a hydrogen atom or R3 and R5 are as defined above and R4 and R6 together represent a carbon-carbon bond; R7 represents a hydrogen atom or an optionally-substituted alkyl group; each of R8 and R9 independently represents a hydrogen atom or an optionally- substituted alkyl group; and Het represents an optionally- substituted fully unsaturated ring having 5 or 6 atoms in the ring of which one is a nitrogen atom and the remainder are carbon atoms; wherein in R1, R2, R3, R4, R5, R6, R7, R8, R9 and Het any optional substituents present are selected from halogen atoms, and alkyl, alko??, alkylthio, aryl and aryloxy groups exhibit herbicidal activity.
343164
Shell Canada Limited
Smart & Biggar
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