PROCESS FOR THE PREPARATION OF NEW BENZOYLUREA COMPOUNDS AND OF COMPOSITIONS CONTAINING SAME BEING SOME OF THEM ACTIVE IN THE CONTROL OF MITES WHITEFLY AND THRIPS AND OTHERS PHARMACEUTICAL ONES DESTINED TO COMBAT TUMORS IN LIVING BEINGS AS WELL AS FOR THE UTILIZATION OF SAME

摘要

The invention relates to a composition active against mites, whitefly and thrips, which comprises, in addition to a liquid or solid inert carrier material, a benzoylurea compound of the general formula IMAGE wherein R1 is hydrogen atom or represents 1 or 2 substituents which are selected from the group consisting of chlorine, methyl and trifluoromethyl, R2 is an alkyl group having 2-4 carbon atoms or a cycloalkyl group having 3 or 4 carbon atoms, R3 is a hydrogen atom or represents 1-3 substituents which are selected from the group consisting of halogen, and alkyl, alkoxy, haloalkyl and haloalkoxy having 1-4 carbon atoms, R4 and R5 are both fluorine atoms, or wherein R4 is a chlorine atom and R5 is a hydrogen atom, and X is an oxygen or sulphur atom. The composition may be used in a dosage of 10 to 5000 g of active substance per hectare. The invention further relates to pharmaceutical compositions comprising the above compounds. Finally the invention relates to new benzoylurea compounds and to the preparation thereof.