Process for preparing nitrobifenileno.

The invention relates to a process for preparing NITROBIFENILOS of formula (I), wherein M is for 1 or 2, R is halogen, RO OR, where R is an organic radical cq EU can carry GROUPS inert reaction conditions, N It is for 0, 1, 2 or 3 and IF N is 2 or 3, the radicals R may be different. ACCORDING TO THE INVENTION, reacting a CLORNITROBENZOL of formula (II) in presence of a palladium catalyst and a base in a solvent with a phenylboronic acid (IIIA), one of its alkyl esters of formula (IIIb) R 1 has the meaning C 1 C 6, or an anhydride thereof. THE COMPOSITION NES (I) AS PRODUCTS ARE SUITABLE FOR INITIAL BIFENILAMINAS, which are themselves INTERMEDIATE PRODUCTS FOR ACTIVE SUBSTANCES FUNGICIDE PROTECTION OF PLANT GROWTH.