C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/273, 260/299
C07D 515/00 (2006.01) A01N 43/90 (2006.01) C07D 515/04 (2006.01) C07D 515/06 (2006.01) C07D 515/16 (2006.01) C07D 517/04 (2006.01) C07D 517/06 (2006.01) C07D 517/16 (2006.01)
Patent
CA 1251216
K 1834 FF ABSTRACT HERBICIDAL COMPOSITIONS CONTAINING HETEROCYCLIC PENTALENES A herbicidal composition which comprises a carrier and, as active ingredient, a compound of the general formula I or where possible, an acid addition salt thereof: (I) Image in which Y represents a sulphur, selenium or tellurium atom; R1 and R2 each independently represents an optionally substituted alkyl or aryl group or an alkoxycarbonyl group, or R1 and R2 together represent an alkylene linkage or an alkylene linkage containing a heteroatom in the chain, each linkage being optionally substituted with one or more alkyl groups or phenyl groups or an alkoxy substituted phenyl group, a benzyl group, an acyl group, a pyridyl group or a furyl group with the proviso that when the heteroatom is sulphur it is optionally present in an oxidized form; X represents an oxygen atom and in addition when Y repre- sents a sulphur atom X optionally represents a sulphur atom. Also within the scope of the invention are certain novel compounds according to general formula I and a method of combatting undesired plant growth at a locus.
405160
Clark Michael T.
Gilmore Ian J.
Shell Canada Limited
Smart & Biggar
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