resources to combat insects, spiders and mites, their eggs and mushrooms

摘要

The invention comprises fluoro-acetyl ureas of the formula FCH2CONHCONHR wherein R may be aliphatic, cycloaliphatic, araliphatic or aromatic radical, or an acyl or sulphonyl radical of an organic acid, which may be prepared by reacting a monofluo-acetyl halide or monofluoro acetic acid anhydride with a urea having the formula H2NCONHR or by reacting monofluoroacetamide with an isocyanate having the formula OCNR, or with a compound converted to the isocyanate under the reaction conditions. The fluoro-acetyl ureas prepared may be NN1-bis-monofluoroacetyl urea, N - monofluoro - acetyl - N1-methyl urea, N-monofluoro-acetyl-N1-n-pentyl urea, N - monofluoro - acetyl - N1 - undecyl urea, N - monofluoro - acetyl - N1 - octadecyl urea, N - monofluoro - acetyl - N1 - 2 - methyl propyl urea, N - monofluoro - acetyl - N1 -monofluoroacetamido methyl urea, N-monofluoro - acetyl - N1 - b - chlroethyl urea, N-monofluoro - acetyl - N1 - b - phenyl -ethyl urea, N - monofluoro - acetyl - N1 - benzyl urea, N - monofluoro - acetyl - N1 - allyl urea, N - monofluoro - acetyl - N1 - cyclohexyl urea, N - monofluoro - acetyl - N1 - phenyl urea, N - monofluoro - acetyl - N1 - p - chloro phenyl urea, N - monofluoro - acetyl - N1 - p - nitrophenyl urea, N - monofluoro - acetyl - N1 - p-tolyl urea, N - monofluoro - acetyl - N1 - p -tert. butyl phenyl urea, N - monofluoro-acetyl-N1-p-tolyl sulphonyl urea. N-monofluoroacetyl - N1 - monofluoro - acetamido - methyl urea is prepared by the reaction of monofluoroacetamide with bromine and sodium hydroxide solution. N : N1 - bis - monofluoro - acetyl urea is prepared by reacting monofluoro-acetamide with onalyl chloride preferably in the molecular ratio of 2 : 1 in an inert solvent under reflux. These compounds have pesticidal action (see Division A5).ALSO:Pesticidal compositions contain compounds of the formula FCH2CONHCONHR, wherein R may be hydrogen, aliphatic, cycloaliphatic, araliphatic or aromatic radical or an acyl or sulphonyl radical of an organic acid, together with a carrier. The compounds may be used in solution or suspension, suitable solvents being methanol, ethanol, propanol, isopropanol, acetone and dimethyl formamide, they may also be used as solid preparations. The compositions may also include colloidal protectives and dispersing agents such as cell pitch, wetting-agents such as alkyl aryl sulphonates, polyoxyethylated alkyl polyols or fatty acid methyl taurides, and inert substances such as active silicic acid, talcum and kaolin. Other wetting agents are oxyethylated alkylphenol, an oxyethylated alcohol or ester, an oxyethylated carboxylic acid or a calcium salt of an alkylaryl sulphonic acid.