Hydrochloric Acid → HCID 19913991, compound

Participants

Reaction Steps

A solution of 3-[3-[[2-(3,4-dimethoxyphenyl)ethyl]amino]-2-hydroxypropoxy]-6-(2-triphenylmethylhydrazino)pyridazine (330 g) and 37% hydrochloric acid (0.12 liter) in methanol (0.5 liter) and acetone (0.5 liter) was heated at reflux for 3 hours, then the solvent was evaporated under vacuum. The residue was diluted with n-butanol (100 ml), evaporated to dryness and triturated with acetone (1 liter) to afford 235 g of crude product which was dissolved in hot methanol (0.65 liter). The solution was filtered and diluted, while hot, with acetone (1.6 liter).

Provenance & Evidence