Benzaldehyde oximes and method for producing same

Method for preparing compounds of the formula (I)

• in which
• X2 is H, C1-C4 alkyl, C1-C4 fluoroalkyl, C1-C4 fluoroxyalkyl, C1-C4 alkoxy, fluorine, CN,
• X3 is H, C1-C4 alkyl, C1-C4 fluoroalkyl, C1-C4 fluoroxyalkyl, C1-C4 alkoxy, fluorine, chlorine, CN,
• X4 is H, C1-C4 alkyl, C1-C4 fluoroalkyl, C1-C4 fluoroxyalkyl, C1-C4 alkoxy, fluorine, CN,
• X5 is H, C1-C4 alkyl, C1-C4 fluoroalkyl, C1-C4 fluoroxyalkyl, C1-C4 alkoxy, fluorine, chlorine, CN,
• X6 is H, C1-C4 alkyl, C1-C4 fluoroalkyl, C1-C4 fluoroxyalkyl, C1-C4 alkoxy, fluorine, CN,
• and wherein the compounds of the general formula (II)
• in which the radicals are as defined above,
• are in a first reaction step reacted in the presence of isopropylmagnesium chloride and DMF to form corresponding adducts (III), which in a second reaction step with addition of acid and hydroxylamine react further to aldehydes of the general formula (IV)
• in which the radicals are as defined above,
• with the subsequent formation of the compounds of the general formula (I).