sodium hydroxide; bis(η3-allyl-μ-chloropalladium(II)); tetrabutyl-ammonium chloride; triphenylphosphine in tetrahydrofuran T=20°C; 20 h;

sodium hydrogencarbonate in benzene 5 h; Heating;

1: 52 percent / ZnCl2 / various solvent(s) / 1.5 h / -20 °C 2: 51 percent / NaHCO3 / benzene / 5 h / Heating View Scheme

sodium hydroxide; [RhCl(η2:η2-cycloocta-1,5-diene)]2; triphenylphosphine-3,3',3''-trisulfonic acid trisodium salt 1.) water, methanol, 100 deg C; 2.) water, 50 deg C, 2 h; Yield given. Multistep reaction;

2: H2 / Pd/C / methanol View Scheme