The preparation of 2-(Hydroxymethyl)pyridine is as follows:NaOH (0.5 g, 12.5 mmol), Al2O3 (2.0 g, 19.6 mmol), aldehyde 1f-g (2 mmol) and H2O (400 μL) were grinded in a mortar. Next, the paste were placed in a glass 10 mL pressure vials and reaction was carried out in microwave reactor: standard mode (200 W), 100 °C, 2 min. After that, reaction mixture was extracted with DCM (2 × 20 mL). Organic layer was evaporated under reduce pressure yielding 2f-g. Solid residue was washed by water (2 × 15 mL). Aqueous phase was acidify with 1N HCl to pH 5.5 and centrifuged. After that aqueous layer was pour down and precipitate was lyophilisated. Products 3f-g were obtained as white solids.
