Abstract:
PROBLEM TO BE SOLVED: To obtain an acid anilide derivative more improved in bactericidal action, especially more improved in a controlling effect on Botrytis, when compared with conventional nicotinic acid anilides, such as 2-chloronicotinic acid 2'-ethylanilide and 2-chloronicotinic acid 3'-isopropylanilide. SOLUTION: This acid anilide derivative includes a 2-aminobiphenyl derivative expressed by general formula (III) (A is a 1-methylpyrazol-4-yl in which the 3-position is substituted with methyl or trifluoromethyl and the 5-position is substituted with chlorine; and R8 is a 1-4C alkyl, a 1-4C alkoxyl, a 1-4C alkylthio or a halogen). The composition which contains the anilide derivative as an active ingredient is used for controlling Eumycetes, especially the Botrytis.
Abstract:
PROBLEM TO BE SOLVED: To provide an acid anilide derivative having an improved fungicidal effect, especially an improved effect for suppressing botrytis fungi, compound to those of nicotinanilides such as 2-chloronicotinic acid-2'-ethylanilide or 2- chloronicotinic acid-3'-isopropylanilide. SOLUTION: This anilide derivative containing a 2-aminobiphenyl derivative represented by formula (III) (A is thiazolyl-5-yl substituted with H, methyl, chloro or trifluoromethyl at the 2- and 4-positions; R8 is a 1 to 4C alkyl, alkoxy, alkylthio or halogen), a composition containing the active ingredient, and a method for using the same for controlling fungi, especially Botrytis fungi.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for removing impurities from 3-(2'-acetoxyethyl)- dihydroxyethyl)dihydro-2(3H)furanone. SOLUTION: In this method, 3-(2'-hydroxyethyl)dihydro-2(3H)furanone including impurities is subjected to plural distillations or purifications and high boiling point impurities are removed, then a product taken out from the top part is subjected to at least other one process, thus a low boiling point component and a middle boiling point component are removed from the top part to obtain pure 3-(2'-hydroxyethyl)dihydro-2(3H)furanone (I) as a column bottom product.
Abstract:
The invention relates to a method for producing o-chloromethyl benzoic acid chlorides of formula (I), in which R to R can be the same or different and represent hydrogen C1-C4 alkyl, halogen or trifluoromethyl, by reacting benzo-condensed lactones of formula (II), in which R to R have the above-mentioned meaning, with thionyl chloride. The inventive method is characterized in that the reaction is carried out in the presence of catalytic quantities of a Lewis acid and in the presence of catalytic quantities of a phosphine derivative.