Palladium-catalyzed decarboxylative coupling of benzoic acid derivatives using hydrazone ligands

Palladium-catalyzed decarboxylative coupling of benzoic acid derivatives with arylboroxins gave biaryls using a catalytic amount of Pd(TFA)2-hydrazone 1d system with Ag2CO3 at 80 °C in good yields. We also found that decarboxylative coupling with aryl(trialkoxy)silanes gave biaryls using a Pd(TFA)2-hydrazone 1g system with AgF in good yields.