1,4-Dioxane hydrochloride → HCID 178498852, compound

Participants

Reaction Conditions

Reaction Steps

Commercially available 5-hydroxypyrazine-2-carboxylic acid (1.00 g, 7.14 mmol) was dissolved in methanol (5 mL), and a 4N hydrochloric acid/dioxane solution (25 mL) was added, followed by stirring at 60° C. for 1.5 hours and heating to reflux at 80° C. for 2.5 hours. The reaction solution was brought back to room temperature, the solvent was distilled off under reduced pressure, and ethyl acetate (20 mL) was added to the resulting residue to allow it to be suspended. The resulting precipitate was filtered off, and washed with ethyl acetate, followed by vacuum drying, to afford the desired compound (673 mg, yield 61%) as an orange-brown solid.

Provenance & Evidence