1.1: potassium tert-butylate / toluene / 15 - 30 °C / Inert atmosphere 1.2: 0 - 5 °C / pH 2 - 2.5 2.1: phosphorus pentoxide; phosphoric acid / 100 - 120 °C 3.1: magnesium / methanol / 25 - 65 °C / Reflux 4.1: lithium aluminium tetrahydride; AlCl3, aluminium chloride / tetrahydrofuran / -5 - 5 °C 4.2: -5 - 5 °C 5.1: isopropyl alcohol / 60 °C View Scheme

1.1: potassium tert-butylate / toluene / 15 - 30 °C / Inert atmosphere 1.2: 0 - 5 °C / pH 2 - 2.5 2.1: phosphorus pentoxide; phosphoric acid / 100 - 120 °C View Scheme

1.1: potassium tert-butylate / toluene / 15 - 30 °C / Inert atmosphere 1.2: 0 - 5 °C / pH 2 - 2.5 2.1: phosphorus pentoxide; phosphoric acid / 100 - 120 °C 3.1: magnesium / methanol / 25 - 65 °C / Reflux 4.1: lithium aluminium tetrahydride; AlCl3, aluminium chloride / tetrahydrofuran / -5 - 5 °C 4.2: -5 - 5 °C View Scheme