1: triethylamine / 165 °C / Erwaermen des Reaktionsprodukts mit wss.-aethanol. Kalilauge 2: pyridine View Scheme

1.1: 68 percent / K2CO3 / acetone / 22 h / 20 °C 2.1: 82 percent / DMAP; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide hydrochloride / CH2Cl2 / 15 h / 20 °C 3.1: 42 percent / K2CO3 / pyridine / 1 h / Heating 4.1: 92 percent / K2CO3 / acetonitrile / 3 h / 60 °C 5.1: AlBr3 / acetonitrile / 1 h / 0 °C 5.2: 97 percent / aq. HCl / methanol; acetonitrile / 1 h / Heating 6.1: Ag2O; 4 Angstroem molecular sieves / CH2Cl2 / 36 h / 40 °C 7.1: hydrogen / Pd/C / ethyl acetate / 14 h / 20 °C 7.2: 18 mg / K2CO3 / methanol / 1.5 h / 70 °C View Scheme

1: With triethylamine Allan-Robinson condensation; 0.0833333 h; Heating; 2: With potassium hydroxide in methanol 0.333333 h; sonication;

2: pyridine; potassium carbonate View Scheme

1: sodium salt of/the/ 3.5-dimethoxy-benzoic acid / 180 °C 2: durch Entmethylierung View Scheme

1: 1.) triethylamine; 2.) 60 percent KOH / 1.) 175 deg C, 1 h; 2.) methanol, 30 min, reflux 2: 20 percent / KOH, K2S2O8 / H2O / 12 h 3: 62 percent / K2CO3 / acetone / 1 h / Heating 4: 75 percent / H2 / Pd/C / acetone View Scheme

1: potassium-<4-benzoyloxy-3-methoxy benzoate> / 160 °C / Erwaermen des Reaktionsprodukts mit wss.-aethanol. Kalilauge 2: aqueous KOH-solution; aqueous potassium peroxo disulfate solution / anschliessend Erwaermen mit wss. Salzsaeure und Natriumsulfit 3: acetone; potassium carbonate 4: aqueous hydrochloric acid; acetic acid View Scheme

1: 82 percent / potassium p-(benzyloxy)benzoate / 8 h / 160 °C 2: 45 percent / AcOH, HCl / 3 h / Heating View Scheme

potassium-lt;4-benzoyloxy benzoategt; T=180°C; Erwaermen des Reaktionsprodukts mit aethanol. Kalilauge;

1: 82 percent / potassium p-(benzyloxy)benzoate / 8 h / 160 °C 2: 74 percent / K2CO3 / acetone / Heating 3: 69 percent / AcOH, HCl / 3 h / Heating View Scheme