1,2,3-THIADIAZOLE-3-IN-5-YLIDENE UREA DERIVATIVES PROCESSES FOR THE MANUFACTURE OF THESE COMPOUNDS AND AGENTS THAT CONTAIN THEM AND HAVE A GROWTH- REGULATING AND DEFOLIATING EFFECT

摘要

The present invention provides 1,2,3-thiadiazole-3-in-5-ylidene urea derivatives of the general formula < IMG > I in which R1 is hydrogen or a C1-C4 alkyl group which may be interrupted at least once by oxygen or sulfur atoms, R2 is a C14 alkyl group which may be interrupted at least once by oxygen or sulfur atoms, a C3-C8 cycloalkyl radical which may be substituted at least once with alkyl, an aromatic hydrocarbon radical which may be substituted at least once with alkyl, halogen, alkylthio, alkoxy, trifluoromethyl, the nitro group or a hydrocarbon radical containing at least one N-atom or R1 and R2 together with the N-atom from the morpholino, piperidino or pyrrolidino group, R3 is a C1-Cl0 alkyl radical which may be substituted by halogen, hydroxy, lower alkyl sulfonyloxy, alkanoyloxy, lower alkoxy, phenoxy, mono or dihalo phenoxy, di-lower alkyamino; dihalo lower cycloalkyl or 2-methyl-1,3-dioxolan-2-yl, a C2-C6 alkenyl or C3-C6 alkinyl radical or an aryl-C1-C2-alkyl group which may be substituted by halogen, lower alkyl, nitro, trifluoromethyl, lower alkoxy, or lower alkylthio and X is an oxygen or sulfur atom as well as their acid addition salts formed with inorganic and organic acids, processes for the manufacture of these compounds as well as the agents which contain them and have a growth-regulating and defoliating effect.