Method for producing a cross-coupling product of a benzenoid diazonium salt

The invention relates to a method for producing a cross-coupling product of a benzenoid dizonium salt according to the general formula (I), wherein the groups R1, R2, R3, R4, and R5 represent hydrogen, halogen, an alkyl, alkenyl, aryl, alkoxy, aryloxy, nitro, cyano, hydroxy, acetyl, and/or diazo groups independently of each, and X represents BF4, Cl, F, SO3CH3, CO2CH3, PF6, ClO2CH3, or CIO4, comprising the following steps: (a) providing a benzenoid amide, which with the exception of the diazo function has the same substituents R1, R2, R3, R4, and R5 as the benzenoid diazonium salt of the general formula (I), and hydrolytically cleaving the amide to form an amine or providing a corresponding amine, (b) diazotizing the amine thus obtained or provided with a nitrite, and (c) subsequently reacting the benzenoid diazonium salt with a coupling partner in the presence of a catalyst to form a cross-coupling product, wherein the coupling parter is represented by the general formula (II), R6, R7, and R8 are the same or