INTERMEDIATE COMPOUNDS USEFUL IN THE PREPARATON OF 1-(SUBSTITUTED PHENYL)-2-PYRIDONES

摘要

A compound of formula (I) wherein R<1>, R<2>, R<4> and R<5> are independently selected from hydrogen, halogen, lower alkyl optionally substituted by halogen, lower alkoxy optionally substituted by halogen and lower alkenyl optionally substituted by halogen; R<3> is halogen, amino, mono- or di(lower alkyl)-amino, lower alkyl substituted by halogen, lower alkoxy optionally substituted by halogen and lower alkenyl optionally substituted by halogen provided that R<3> is not monochloro or monobromo-methyl; R<6> is oxygen or sulphur; R<7> and R<1><0> are independently selected from hydrogen, halogen, lower alkyl optionally substituted by halogen, lower alkoxy optionally substituted by halogen, and lower thioalkoxy optionally substituted by halogen; and R<8> is hydrogen, halogen, optionally substituted lower alkyl, optionally substituted lower alkoxy, optionally substituted lower thioalkoxy, cyano, nitro, optionally substituted oximino, optionally substituted lower alkenyl, optionally substituted aryloxy, optionally substituted amino or S(O)nR<1><1> wherein n is 0, 1 or 2 and R<1><1> is optionally substituted lower alkyl; R<9> is hydrogen, or lower alkyl optionally substituted by halogen, lower alkenyl optionally substituted by halogen or C02R<1><2> wherein R<1><2> is lower alkyl optionally substituted by halogen; provided that R<1>, R<2>, R<3>, R<4> and R<5> are not all hydrogen: and further provided that when R<3> is trifluoromethyl and R<1> and R<5> are halogen, R<2> and R<4> are not both hydrogen, or R<7>, R<8>, R<9> and R<1><0> do not comprise from one to four halogen or trihalomethyl substitutents.