Pd-Catalyzed Cross-Coupling of Chloroarene-Cr(CO)3 Complexes with Stabilized Organoindium(III) Reagents Under Remarkably Mild Conditions

The palladium catalyzed cross-methylation of intramolecularly stabilized dimethylindium (III) compounds (3 and 4) with different chloroarene-Cr(CO)3 complexes have been studied. Under mild conditions (40 °C in THF, 3 h) high yields (up to 96%) of the coupling products were obtained in the presence of 1-10 mol% of PdCl2(PPh3)2. With MeMgCl almost no conversion was observed under the same conditions.