Patent GB-963924-A (GB)
Title: Fungicidal compositions for agricultural use
Inventor: HATTA RYOZO
IPC: C07D307/52
Filed: 1961-07-25
Abstract: The invention relates to the manganese copper, zinc and lead salts of dithiocarbazic acid.  The salts are prepared (1) by reacting the free acid with a salt or hydroxide of the appropriate metal, or (2) by reacting hydrazine, carbon disulphide and the appropriate metal hydroxide.  The compounds are used as fungicides (see Division A5).ALSO:The invention relates to the benzyl triethylammonium salt of dithiocarbazic acid, the zinc and triethylammonium salts of 3-acetyl dithiocarbazic acid, the zinc salts of 3(-p and m-methyl-benzoyl) dithiocarbazic acid, triethylammonium 3-(o-hydroxy-benzol) dithiocarbazate, potassium 3-(p-dimethylaminobenzoyl) dithiocarbazate, zinc 3-benzoyl dithiocarbazate, triethylammonium 3-(p-chlorobenzoyl) dithiocarbazate potassium 3-(2-furoyl) dithiocarbazate, triethylammonium 3-(2-furoyl) dithiocarbazate, zinc 3-nicotinoyl dithiocarbazate, potassium and zinc 3-ethylidene dithiocarbazate, potassium and nickel 3-isopropylidene dithiocarbazate, potassium and zinc 3-benzylidene dithiocarbazate, potassium, triethylammonium and zinc 3-(o-hydroxy benzylidene) dithiocarbazate, potassium, manganese, ferrous, ferric, cobalt, nickel, copper, zinc, and tin, 3-(2-furfurylidene) dithiocarbazate, triethylammonium 3-pyrimidinyl-(2)-dithiocarbazate and the organo-metallic compounds phenylmercuricdithiocarbazate, methylarsine 3-(2-furfurylidene) dithiocarbazate, benzyl-arsine 3-(2-furfurlidene)-dithio carbazate and phenyl mercuric 3-(2-furfurylidene) dithiocarbazate.  The salts are prepared (1) by reaching the free acid with a salt anyhydroxide of the appropriate metal or base (2) in the case of the Schiff's bases by reacting the salt of dithiocarbazic acid with the appropriate aldehyde or ketone and (3) by reacting hydrazine or the appropriate hydrazine derivative with carbon disulphide and the appropriate metal hydroxide or organic base.  The compounds of the invention are used as fungicides (see Division A5).ALSO:A fungicidal dispersion, emulsion or solid composition comprises as active ingredient one or more compounds of the general formula <FORM:0963924/A5-A6/1> (in which R represents an unsubstituted amino group or an amino group substituted by an acyl, alkyl or aralkyl group or a saturated or unsaturated cyclic or heterocyclic group or a Schiff's base of said compound in which R is -NH2, M represents a metal atom, an organo metallic group which is attached to the dithio carbazate group at the metal atom or a radical which forms an ammonium hydrazinium or organic quaternary ammonium salt, and n is an integer equal to the valency of M), together with a dispersing agent, an emulsifying agent or a solid carrier.  Specified groups M are sodium, potassium, iron, cobalt, nickel, manganese, zinc, lead, cadmium, tin, copper, phenyl mercury, methyl arsenic, benzyl arsenic, benzyl triethyl ammonium and methyl ammonium. Specified groups R are acetyl, propionyl, p-methyl benzoyl, m-methyl benzoyl, o-hydroxybenzoyl, p-dimethylaminobenzoyl, benzoyl, p-chlorobenzoyl, 2-furoyl, nicotinoyl, ethylidene, isopropylidene, benzylidene, o-hydroxybenzylidene, 2-furfurylidene and pyrimidinyl-(2). Specified solid forms are wettable powders, dusts and pellets. The composition may also contain adhesives, other pesticides, herbicides and fertilizers.