Process for preparing biaryls

Biaryls production involves converting halogenated aromatic compound with boronic acid, anhydride, dimer, trimer or derivative of boronic acid, cyclic boronic acid ester, boronate or boric acid in presence of a palladium phosphine complex. The phosphine group is substituted with a branched 3-8 carbon containing alkyl group. The conversion is carried out in presence of an organic solvent. The biaryl has general formula (I), halogenated aromatic compound has general formula (II), boronic acid has general formula (III), cyclic boronic acid ester has general formula (IV), boronate has general formula (V) and boric acid has general formula (VI). The compounds having general formulae (I-VI). Z : H or oxygen, preferably H; n : 1, 2 or 3, preferably 1; X : F, Cl, 1-4C-alkyl or alkyloxy group, preferably F at 5 position; m : 0, 1, 2, 3, 4 or 5, preferbly 2; Y' : halogen, 1-4C-alkyl, alkoxy, halogenalkoxy or hydroxy group, preferably Cl at 3' and 4' position; Hal : halogen atom, preferably Br; Q 1>,Q 2>hydroxy group, a