1.1: potassium carbonate / methanol / 30 °C 1.2: 1.67 h / 30 - 60 °C 2.1: sodium methylate / 4.5 h / 30 - 80 °C 2.2: 4.5 h / 80 - 100 °C 3.1: hydrogenchloride / methanol; water / 5 h / 64 °C 3.2: 28 °C View Scheme

1: potassium iodide / N,N-dimethyl-formamide / 2 h / 30 - 102 °C 2: hydrazine hydrate / methanol / 1.17 h / 30 - 65 °C View Scheme

1.1: potassium carbonate / methanol / 30 °C 1.2: 1.67 h / 30 - 60 °C 2.1: sodium methylate / 4.5 h / 30 - 80 °C 2.2: 4.5 h / 80 - 100 °C 3.1: hydrogenchloride / methanol; water / 4 h / 30 - 70 °C View Scheme

<b>Multi-step reaction with 3 steps<br /> </b>1.1: potassium carbonate / acetone / 2.25 h / 28 - 55 &deg;C<br />2.1: AlCl₃, aluminium chloride / dichloromethane / 0.67 h / 0 &deg;C<br />2.2: 5.5 h / -10 &deg;C<br />3.1: triethylsilane / dichloromethane / 0.17 h / 30 &deg;C<br />3.2: 2 h / 0 - 30 &deg;C<br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1.1: AlCl₃, aluminium chloride / dichloromethane / 0.67 h / 0 &deg;C<br />1.2: 5.5 h / -10 &deg;C<br />2.1: triethylsilane / dichloromethane / 0.17 h / 30 &deg;C<br />2.2: 2 h / 0 - 30 &deg;C<br /> <br /> &nbsp;