Methanol → HCID 178498852, compound

Participants

Reaction Steps

Thionyl chloride (152 mL, 2.08 mol) was added dropwise at −20° C. to methanol (5 L). After the addition was completed, the mixture was stirred at this temperature for 30 minutes. Then 5-hydroxy-pyrazine-2-carboxylic acid (100 g, 714 mmol) was added, and the mixture was heated at reflux for 2 hours. The reaction mixture was concentrated in vacuo, and the residue was recrystallised from methanol (400 mL) to give 71 g (464 mmol) of the title compound in 65% yield.

Provenance & Evidence