1: 81.4 percent / <3μC3H5PdCl>2, PPh3, NaOH, (nBu)4NCl / tetrahydrofuran / 20 h / 20 °C 2: 1.) <RhCl(COD)>2, TPPTS; 2.) NaOH / 1.) water, methanol, 100 deg C; 2.) water, 50 deg C, 2 h 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;

hydrogen; palladium on activated charcoal in methanol