| 摘要 |
<p>2-Pyrazoline derivs. of formula (I) are new. In (I) R1=H, alkyl or alkenyl; X=O or S; each R2=halogen, alkyl, haloalkyl, CN, NO2, alkoxy, haloalkoxy, alkylthio, haloalkylthio, alkylsulphonyloxy, alkylsulphonyl, alkoxycarbonyl, or acyl; or 2 adjacent R2's complete a 5- to 7-membered ring opt. contg. one or more O and which is opt. substd. m=0-4; either (a) Ra=H, one of Rb and Rc=4-(R4)-phenyl; and the other is H; or (b) Ra and Rb=alkyl; and Rc=4-(R4)-phenyl; R4 and R5=R8SO2O, H, halogen, alkyl, haloalkoxy, alkylthio or alkylsulphonyl; R8=alkyl or haloalkyl; provided that at least one of R4 and R5=R8SO2O; or at least R4=haloalkoxy. Specifically claimed (I) is e.g., N,3-bis(4-chlorophenyl)-4 (4-difluoromethoxyphenyl) -2-pyrazoline-1-carboxamide.</p> |
