HCID 178464038, compound → HCID 178464039, compound

Participants

Reaction Steps

10 grams of 1-(2-diethylaminoethyl)-2-hydroxy-6-methoxy-7-aza-benzimidazole were boiled for 5 hours at reflux in 100 ml of 48% hydrobromic acid and the solution evaporated in a vacuum. The residue was stirred with isopropanol, filtered with suction and then recrystallized twice from ethanol under the addition of activated carbon.

Provenance & Evidence