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

Abstract From the Canadian patent

The present invention provides 1,2,3-thiadiazole- 3-in-5-ylidene urea derivatives of the general formula 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 hydro-, carbon 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, …