Patent ID: 7745627

Claim:
A process for the preparation of compounds (I) wherein M is, identically or differently on each occurrence, Rh, Ir, Pd or Pt; Z is, identically or differently on each occurrence, N or P; A, A′ is, identically or differently on each occurrence, N, C—H or C—R or C—R′; or alternatively two adjacent ring atoms A-A or A′-A′ on each occurrence, identically or differently, stand for S, O, Se or N—R 1 , with the proviso that these units do not occur more than once per ring; R, R′ is, identically or differently on each occurrence, F, Cl, Br, NO 2 , CN, a straight-chain, branched or cyclic alkyl or alkoxy group having 1 to 20 C atoms, where one or more non-adjacent CH 2 groups may be replaced by —CR 1 ═CR 1 —, —C≡C—, —O—, —S—, —NR 1 —, or —CONR 1 — and where one or more H atoms may be replaced by F, or an aryl, heteroaryl, aryloxy or arylamino group having 4 to 14 C atoms, which may be substituted by one or more non-aromatic radicals R; where a plurality of substituents R on the same ring together may in turn define a further mono- or polycyclic, aliphatic or aromatic ring system; R 1 is, identically or differently on each occurrence, H or an aliphatic or aromatic hydrocarbon radical having 1 to 20 C atoms; n is 1 for M=Pd or Pt and is 2 for M=Rh or Ir; which comprises reacting a compound (Ia) wherein Y is on each occurrence, identically or differently, F, Cl, Br, I, OR 1 , R 1 COO, SR 1 , N(R 1 ) 2 ; and the other symbols and indices are as defined for compound (I), with an organometallic compound (Ib) where Q stands for an alkali metal, an alkaline-earth metal or alkaline-earth metal halide, trialkyltin or zinc or a zinc halide, which may optionally also be substituted by further organic groups, and the other symbols and indices have the meaning given for compound (I).