Ni(dppp)Cl2 in diethyl ether

oxalic acid in diethyl ether; water

1: With magnesium in diethyl ether T=0 - 20°C; Grignard reaction; 2: With toluene-4-sulfonic acid in benzene Heating;

[(C6H6)(PCy3)(CO)RuH]+BF4- in chlorobenzene T=90°C; 5 h; Schlenk tube; regioselective reaction;

toluene-4-sulfonic acid in benzene Heating; Yield given;

1: NaBH4 / tetrahydrofuran; methanol / 25 °C 2: p-toluenesulfonic acid*H2O / benzene / Heating View Scheme

1: LDA 2: NaBH4 / tetrahydrofuran; methanol / 25 °C 3: p-toluenesulfonic acid*H2O / benzene / Heating View Scheme

1: copper(l) iodide; bis-triphenylphosphine-palladium(II) chloride; triethylamine / 4 h / 50 °C 2: copper(l) iodide; bis-triphenylphosphine-palladium(II) chloride; triethylamine / 72 h / 80 °C 3: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.25 h / 0 °C 4: 2,6-dibromopyridine N-oxide; BrettPhosAuNTf2 / 1,2-dichloro-ethane / 4 h / 20 °C View Scheme

potassium hydrogensulfate

diethyl ether Erhitzen des Reaktionsprodukts mit Naphthalin-sulfonsaeure-(2) auf 140grad;