| abstract |
PROBLEM TO BE SOLVED: To provide an isothiazolecarboxylic acid having an activity of inducing resistance to plant pathogenic bacteria and exhibiting excellent activity as a plant disease controlling agent. SOLUTION: Formula: embedded image Wherein X represents halogen, C 1-4 alkyl or C 1-4 haloalkyl; Y is —OZ, —SZ 1 or Z is a hydrogen atom, C 1-6 alkyl, C 3-8 cycloalkyl, C 3-6 unsaturated hydrocarbon, phenyl, naphthyl or 5 Or a 6-membered heterocyclic group; Z 1 represents a hydrogen atom, C 1-8 alkyl or C 3-8 cycloalkyl; Z 2 represents hydrogen, C 1-16 alkyl, C 1-6 haloalkyl, C 3-8 cycloalkyl, C 3-6 unsaturated hydrocarbon, phenyl or a 5- or 6-membered heterocyclic group; Z 3 is a hydrogen atom, C 1-4 Alkyl, C Represents 3-6 unsaturated hydrocarbon or phenyl; and Z 2 Z 3 together with the nitrogen atom to which they are attached form a 5- or 7-membered heterocyclic group, which, in addition to the nitrogen atom, is further selected from nitrogen and oxygen atoms An isothiazolecarboxylic acid derivative represented by the formula: which may contain 1 to 2 heteroatoms and may be substituted. |