Acetoacetic Acid → HCID 178486676, compound

Participants

Reaction Steps

4-Amino-3-hydroxy-6,7-dimethoxy-1-methylisoquinoline (BBQ) (1.772 grams, 5 mmol) as the diacetate solvate in 50 ml methylene chloride was treated with 2.5 ml triethylamine (16.5 mmol) for 5 minutes and subsequently with 0.63 ml isobutyryl chloride (6 mmol) with stirring under a nitrogen atmosphere. After 1 hour, the slurry was evaporated to dryness in vacuo and boiled in 50 ml methanol and 5 ml water for 15 minutes. The solid was isolated by filtration, washed successively with methanol and acetone, and then dried in vacuo at 50° C. to provide 0.6 grams of Compound BO (39.4% yield) having a melting point of 292°-294° C. (with decomposition).

Provenance & Evidence