tetra-(n-butyl)ammonium iodide; potassium carbonate in N,N-dimethyl-formamide T=20°C; 2.5 h;

potassium carbonate in N,N-dimethyl-formamide T=90°C; 3 h;

in water; acetone

1: 4-hydroxy-benzaldehyde With bromine in methanol; chloroform T=20°C; 22 h; 2: benzyl chloride With potassium carbonate in N,N-dimethyl-formamide 1.25 h; Inert atmosphereReflux;

1: Br2 / CHCl3 / 2 h / 40 °C 2: K2CO3 / dimethylformamide / 70 °C View Scheme

copper; potassium carbonate; 4-hydroxy-benzaldehyde T=180 - 200°C;

3-chloro-benzenecarboperoxoic acid in chloroform T=20°C; 4 h;

1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 72 h / 40 °C 2: sodium methylate / ethanol / 1 h / 20 °C 3: sodium carbonate / tetrakis(triphenylphosphine) palladium(0) / toluene; water / 2 h / Reflux 4: triethylamine / toluene; acetonitrile / 18 h / Reflux 5: hydrogen / palladium 10 on activated carbon / ethyl acetate; ethanol / 4 h / 50 °C / 3040.2 Torr View Scheme

dicobalt octacarbonyl; potassium carbonate; methyloxirane in methanol T=60°C; P=760 Torr; 10 h;