Ammonium Chloride → HCID 58042501, compound

Participants

Reaction Steps

3-Chloro-2-(1,1,1,3,3,3-hexafluoropropan-2-yloxy)-5-nitropyridine (Preparation 255, 2.55 g, 7.9 mmol), ammonium chloride (2.50 g, 46.7 mmol) and iron powder (1.70 g, 30.4 mmol) were suspended in a mixture of ethanol (10 mL) and water (3 mL). The suspension was heated for 3 hours under reflux then allowed to cool to room temperature. The reaction mixture was filtered on a Celite™ pad and the pad was washed with ethanol. The filtrate was concentrated in vacuo and the crude residue was partitioned between water and ethyl acetate. The aqueous layer was separated and extracted by ethyl acetate (2×25 mL). Organic layers were combined, dried over magnesium sulfate and concentrated in vacuo. The crude residue was purified by silica gel chromatography eluting with 50% diethyl ether in heptane to afford the title compound as a light yellow oil (2.0 g, 87%).

Provenance & Evidence