| abstract |
Abstract The present invention now provides, as new compounds, the 4,5-dichloroimidazole-2-carboxylic acid derivatives of the general formula in which the group represents a carbon atom which has three bond to hetero-atoms, and their salts with bases. The compounds of the present invention have been found to possess a pesticidal action. The present invention also provides a process for the preparation of a 4,5-dichloroimidazole-2-carboxylic acid derivative of the formula (I), in which (a) 4,5-dichloro-2-dichloromethylene-imidazole or (b) 4,5-dichloro-2-trichloromethylimidazole, or (c) the dimeric ketene of 4,5-dichloroimidazole-2-carboxylic acid, is reacted with a suitable nucleophilic reagent and the reaction product thus formed is optionally subjected to further subsequent reactions. |