Thionyl Chloride → HCID 178502030, compound

Participants

Reaction Conditions

Reaction Steps

7.4 mL (12.069 g, 101.4 mmol) thionyl chloride and 1.80 g (7.66 mmol) methyl 5-carboxy-1H-benzimidazole-2-carbamate in 37 mL dry benzene were heated to reflux under argon for 3.5 hours. The mixture was then cooled to 23° C. and the solvent and excess thionyl chloride were distilled under reduced pressure. The resulting brown solid was stored under vacuum to remove all traces of thionyl chloride and used in the following Examples without further purification.

Provenance & Evidence