Abstract: A process for the preparation of 2-chloro-5-chloromethylpyridine of the formula (I) ##STR1## which is used as an intermediate for the preparation of insecticides, the process comprising (a) reacting in a first step nicotinic acid of the formula (II) ##STR2## with phosphorus pentachloride, if appropriate in the presence of thionyl chloride and if appropriate in the presence of a diluent, (b) reacting in a second step the resulting 3-trichloromethylpyridine from the first step, of the formula III, ##STR3## with an alkali metal alkoxide of the formual (IV)R--O--M (IV)in whichR represents alkyl andM represents an alkali metal cation,if appropriate in the presence of a diluent, (c) reacting in a third step the resulting pyridine ether acetal from the second step, of the formula (V), ##STR4## in which R has the abovementioned meaning with water, if appropriate in the presence of a catalyst acid, (d) hydrogenating in a fourth step the resulting pyridine aldehyde from the third step, of the formula (VI), ##STR5## in

Abstract: Fungicidal substituted 4-heterocyclyloximinopyrazolin-5-ones of the formula ##STR1## in which R.sup.1 and R.sup.2 independently of one another in each case represent hydrogen, alkyl, alkenyl, alkinyl, cyanoalkyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkoxycarbonyl, hydroxycarbonylalkyl, alkoxycarbonylalkyl, aminocarbonylalkyl, alkylaminocarbonylalkyl or dialkylaminocarbonylalkyl, or represent in each case unsubstituted or in each case substituted oxiranylalkyl, aralkyl, heterocyclyl or aryl andHet represents an unsubstituted or substituted heterocycle.

Abstract: Herbicidal triazoloazines of the formula ##STR1## in which A stands for nitrogen or for a radical C--R.sup.3,R.sup.1, R.sup.2 and R.sup.3 independently of one another each stand for hydrogen, hydroxyl, halogen, for optionally substituted alkyl, for alkoxy, alkylthio or for optionally substituted aryl, or eitherR.sup.1 and R.sup.3 together or R.sup.3 and R.sup.2 together stand for a fused, optionally substituted carbocyclic or heterocyclic ring,X stands for oxygen, sulphur, a sulphinyl group, or a sulphonyl group andAr stands for in each case optionally substituted aryl or heteroaryl.

Abstract: Fungicidal substituted 4-heterocyclyloximinopyrazolin-5-ones of the formula ##STR1## in which R.sup.1 and R.sup.2 independently of one another in each case represent hydrogen, alkyl, alkenyl, alkinyl, cyanoalkyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkoxycarbonyl, hydroxycarbonylalkyl, alkoxycarbonylalkyl, aminocarbonylalkyl, alkylaminocarbonylalkyl or dialkylaminocarbonylalkyl, or represent in each case unsubstituted or in each case substituted oxiranylalkyl, aralkyl, heterocyclyl or aryl andHet represents an unsubstituted or substituted heterocycle.

Abstract: Herbicidal triazolodihydropyrimidine-2-sulphonamides of the formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 independently of one another each stand for hydrogen or for optionally substituted alkyl andR.sup.4 stands for in each case optionally substituted aryl or heteroaryl.

Abstract: A process for the preparation of 2-chloro-5-chloromethyl-pyridine of the formula ##STR1## which comprises reacting nicotinic acid of the formula ##STR2## with phosphorus pentachloride to produce 3-trichloromethylpyridine of the formula ##STR3## reacting the 3-trichloromethylpyridine in a 2nd step with an alkali metal alkoxide of the formulaR-O-M (IV)in whichR represents alkyl andM represaents an alkali metal cation, to produce a pyridine ether acetal of the formula ##STR4## reacting the pyridine ether acetal in a 3rd step with dilute aqueous acid to produce pyridone aldehyde of the formula ##STR5## hydrogenating the pyridone aldehyde in a 4th step with molecular hydrogen in the presence of a hydrogenation catalyst to produce the pyridylmethanol compound of the formula ##STR6## and reducing the pyridylmethanol compound in a 5th step with a chlorinating agent.

Abstract: Microbicidal substituted pyrazolin-5-ones of the formula ##STR1## in which R.sup.1 and R.sup.2 independently of one another each represent hydrogen, alkyl, alkenyl, alkinyl, cyanoalkyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkoxycarbonyl, hydroxycarbonylalkyl, alkoxycarbonylalkyl, aminocarbonylalkyl, alkylaminocarbonylalkyl or dialkylaminocarbonylalkyl, or represent in each case optionally substituted oxiranylalkyl, aralkyl, heterocyclyl or aryl andHet represents an optionally substituted heterocyclic radial.Intermediates therefor of the formula ##STR2## in which R is alkyl, are also new.

Abstract: Fungicidally active substituted benzamides of the formula ##STR1## in which R.sup.1 represents alkoxy, alkenyloxy, alkinyloxy or a heterocyclyl radical,R.sup.2 represents cyano, a carbamoyl radical or a thiocarbamoyl radical,X represents an alkanoyl radical or an alkoximinoalkyl radical, andn represents a number 1, 2 or 3.Intermediates wherein R' is replaced by bromine and R.sup.2 is cyano or a carbamoyl radical are also new.

Abstract: Novel fungicides of the formula ##STR1## in which R.sup.1 represents optionally substituted hydroxyalkyl, optionally substituted hydroxyalkoxyalkyl, optionally substituted heteroarylalkyl or optionally substituted heteroaryl, andR.sup.2 represents optionally substituted alkyl, optionally substituted alkenyl, or alkinyl.Intermediate therefor, wherein R.sup.2 is hydrogen or an alkali metal cation, are also new.

Abstract: A method of combating unwanted vegetation which comprises applying to such vegetation or to a locus from which it is desired to exclude such vegetation a herbicidally effective amount of an alkoximinoalkylamide of the formula ##STR1## in which R represents hydrogen or alkyl,R.sup.1 represents hydrogen, halogen, cyano, nitro, alkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy, halogenoalkylthio, phenyl, phenoxy, formyl, alkoxycarbonyl, alkanoyl or alkoximinoalkyl andR.sup.2 represents halogen, cyano, nitro, alkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy, halogenoalkylthio, phenyl phenoxy, formyl, alkoxycarbonyl, alkanoyl or alkoximinoalkyl.

Abstract: Microbicidal substituted pyrazolin-5-ones of the formula ##STR1## in which R.sup.1 and R.sup.2 independently of one another each represent hydrogen, alkyl, alkenyl, alkinyl, cyanoalkyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkoxycarbonyl, hydroxycarbonylalkyl, alkoxycarbonylalkyl, aminocarbonylalkyl, alkyllaminocarbonylalkyl or dialkylaminocarbonylalkyl, or represent in each case optionally substituted oxiranylalkyl, aralkyl, heterocyclyl or aryl andHet represents an optionally substituted heterocyclic radical.Intermediates therefor of the formula ##STR2## in which R is alkyl, are also new.

Abstract: Novel herbicides of the formula ##STR1## in which R.sup.1 represents alkyl,R.sup.2 represents hydrogen, alkyl, alkylcarbonyl, alkoxycarbonyl, alkylsulphonyl, alkenyl, alkinyl or optionally substituted aralkyl, andR.sup.3 represents optionally substituted aryl.Intermediates of the formula ##STR2## in which R.sup.6 is hydrogen, chlorine or hydroxyl,are also new.

Abstract: A process for the preparation of a 2-cyano-2-oximino-acetamide derivative of the formula ##STR1## in which R.sup.I is alkyl or other organic radical,R.sup.II is hydrogen or alkyl,R.sup.III is hydrogen, alkyl or other organic radical which comprises reacting a 2-cyano-2-oximino-acetamide of the formula ##STR2## with a base B at a temperature between 0.degree. C. and 100.degree. C., to produce a salt of the formula ##STR3## in which B represents one equivalent of an organic of inorganic base,and reacting such salt with an alkylating agent of the formula ##STR4## in which X is halogen, methane- or p-toluenesulphonate or methyl sulphate, at a temperature between 0.degree. C. and 150.degree. C.

Abstract: Microbicidal substituted pyrazolin-5-ones of the formula ##STR1## in which R.sup.1 and R.sup.2 independently of one another each represent hydrogen, alkyl, alkenyl, alkinyl, cyanoalkyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkoxycarbonyl, hydroxycarbonylalkyl, alkoxycarbonylalkyl, aminocarbonylalkyl, alkylaminocarbonylalkyl or dialkylaminocarbonylalkyl, or represent in each case optionally substituted oxiranylalkyl, aralkyl, heterocyclyl or aryl andHet represents an optionally substituted heterocyclic radical.Intermediates therefor of the formula ##STR2## in which R is alkyl, are also disclosed.

Abstract: Fungicidally active substituted pyrazolin-5-ones of the formula ##STR1## in which R.sup.1 and R.sup.2 independently of one another each represents hydrogen, alkyl, alkenyl, alkinyl, cyanoalkyl, hydroxyalkyl, alkoxyalkyl, alkylthioalkyl, alkoxycarbonyl, hydroxycarbonylalkyl, alkoxycarbonylalkyl, aminocarbonylalkyl, alkylaminocarbonylalkyl or dialkylaminocarbonylalkyl, or represents in each case optionally substituted oxiranylalkyl, aralkyl, heterocyclyl or aryl, andR.sup.3 represents halogenoalkyl, halogenoalkenyl or halogenoalkinyl, or represents substituted cycloalkyl, or represents substituted cycloalkylalkyl.

Abstract: Fungicidally active substituted pyrazolin-5-ones of the formula ##STR1## in which R.sup.1 is hydrogen or alkyl,R.sup.2 is hydrogen, alkyl, alkenyl, alkinyl, cyanoalkyl, hydroxyalkyl, alkoxyalkyl, hydroxycarbonylalkyl or alkoxycarbonylalkyl, aminocarbonylalkyl, alkylaminocarbonylalkyl or dialkylaminocarbonylalkyl, or in each case optionally substituted oxiranylmethyl, aralkyl or aryl, andR.sup.3 is alkyl, alkenyl, alkinyl, cyanoalkyl, hydroxyalkyl, alkoxyalkyl, hydroxycarbonylalkyl, alkoxycarbonylalkyl, cycloalkyl or cycloalkylalkyl, or in each case optionally substituted aralkyl, aryloxyalkyl or arylthioalkyl, but wherein R.sup.3 is methyl or ethyl only if R.sup.1 and/or R.sup.2 is not hydrogen or methyl.