sodium hydroxide in tetrahydrofuran; water T=20°C; 0.333333 h;

tetreamethyl ammonium hydroxide in acetonitrile T=20°C; 72 h;

1: sodium ethanolate / ethanol / 10 °C / |Inert atmosphere 2: triethylsilane; trifluoroacetic acid / chloroform / 4.17 h / 20 °C 3: acetic acid; hydrogenchloride / water / 12 h / |Reflux 4: tetreamethyl ammonium hydroxide / acetonitrile / 72 h / 20 °C View Scheme

1: triethylsilane; trifluoroacetic acid / chloroform / 4.17 h / 20 °C 2: acetic acid; hydrogenchloride / water / 12 h / |Reflux 3: tetreamethyl ammonium hydroxide / acetonitrile / 72 h / 20 °C View Scheme

1: acetic acid; hydrogenchloride / water / 12 h / |Reflux 2: tetreamethyl ammonium hydroxide / acetonitrile / 72 h / 20 °C View Scheme