| 摘要 |
Novel pyrazolines of the formula (I) <CHEM> wherein R<1> and R<2> represent hydrogen atom, C<5> PI <8> alkyl group, or unsubstituted or halogen-substituted phenyl group, A represents phenyl group which may be substituted by at least one group selected from the class consisting of halogen atom, C<5> PI <8> alkyl group, C<5> PI <8> alkoxy group, halogeno-C<5> PI <8> alkyl group, halogeno-C<5> PI <8> alkoxy group, nitro group, haloalkylenedioxy group, unsubstituted or halogen-substituted phenyl group, and unsubstituted or halogen-substituted phenoxy group, or A represents halogen-substituted 3-pyridyl group, B represents phenyl group which may be substituted by halogen, or B represents halogen-substituted or C<5> PI <8> alkoxy-substituted 3-pyridyl group, and X and Y individually represent hydrogen atom, halogen atom, C<5> PI <8> alkyl group, halogeno-C<5> PI <8> alkyl group, halogen-C<5> PI <8> alkoxy group or halogeno-C<5> PI <8> alkylthio group, or X and Y together form haloalkylenedioxy group, with the proviso that X and Y do not simultaneously represent hydrogen atom, and with the other proviso that at least one of A and B represents halogen-substituted pyridyl group, and with the further proviso that, when R<1> and R<2> simultaneously represent hydrogen atom, then A represents phenyl group substituted by at least one group selected from the class consisting of halogeno-C<5> PI <8> alkoxy group, nitro group, halomethylenedioxy group, unsubstituted or halogen-substituted phenyl group and unsubstituted or halogen-substituted phenoxy group, or at least one of X and Y represents halogeno-C<5> PI <8> alkoxy group or halogeno C<5> PI <8> alkylthio group, or X and Y together form haloalkylenedioxy group. |
