Patent GB-1039442-A (GB)
Title: Imino-thiadiazolines and their use as agents for combating pests
IPC: A01N43/824
Filed: 1963-05-16
Abstract: The invention comprises compounds of the general formula <FORM:1039442/C2/1> wherein R1 is an aliphatic residue containing not more than 4 carbon atoms or is a phenyl residue substituted by an alkyl radical containing not more than 4 carbon atoms or by the group -CF3, and R2 is an alkyl radical containing not more than 4 carbon atoms or is a phenyl radical substituted by one or several chlorine atoms. The compounds may be prepared by the reaction of a 4-substituted thiosemicarbazide with a carboxylic acid or reactive derivative thereof followed by ring closure with the elimination of water.  In a similar manner may be prepared other compounds of the general formula <FORM:1039442/C2/2> wherein R1 is a phenyl residue which may be substituted by an alkyl radical containing not more than 4 carbon atoms or by the group -CF3, or is a saturated or unsaturated aliphatic residue, R2 represents a hydrogen atom, an alkyl radical containing not more than 4 carbon atoms, or a phenyl residue that may be substituted by at least one alkyl or alkoxy group, at least one halogen atom or at least one -NO2, -CF3 or <FORM:1039442/C2/3> group in which A and A1 each represent an alkyl radical containing not more than 4 carbon atoms, and R3 represents a hydrogen atom, an alkyl radical or the residue R-CO-, where R is an alkyl radical containing not more than 4 carbon atoms, which compounds may be converted into salts or quaternary ammonium compounds. Examples are given.ALSO:Pesticidal compositions comprise a carrier and a compound of the general formula <FORM:1039442/A5-A6/1> wherein R1 is a phenyl residue which may be substituted by an alkyl radical containing not more than 4 carbon atoms or by the group-CF3 or is a saturated or unsaturated aliphatic residue, R2 represents a hydrogen atom, an alkyl radical containing not more than 4 carbon atoms, or a phenyl radical that may be substituted by at least one alkyl or alkoxy group, at least one halogen atom or at least one -NO21 -CF3 or <FORM:1039442/A5-A6/2> group in which A and A1 each represent an alkyl radical containing not more than 4 carbon atoms, and R3 represents a hydrogen atom, an alkyl radical or the residue R-CO- where R is an alkyl radical containing not more than 4 carbon atoms, or a salt or quaternary ammonium compound thereof.  The carrier may be, e.g. at least one of a vehicle, an emulsifier, a dispersant, a wetting agent, a distributing agent, a solvent or an adhesive, and there may also be present a fertiliser or another weed killer or pesticide.  The compositions may be in the form of spray liquors, emulsion concentrates, pastes, wettable spray powders, or dusting or scattering powders.  Other herbicides which may be present are halogenated phenoxyalkanecarboxylic acids, halogenated benxoic acids or phenylacetic acids or the corresponding nitroles, halogenated fatty acids or salts, esters or amides thereof, tertiary or quaternary amines, e.g. dodecylhexamethyleneimine or its salts, or 1, 11-ethylene-bis (pyridinlium) bromide, triaxine derivatives, 2-chlorobenzthiazole, 3-amino-1, 2, 4-triazole, maleic acid hydrazide, 3, 5-dimethyl-tetrahydro-1, 3, 5-thiodiazine-2-thione, pentachlorophenol, dinitrocresol, dinitrobutylphenol and naphthylphthalmic acid.  Examples are given.