Hydrochloric Acid → HCID 68649961, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of (−)-8-[4-(2-butoxyethoxy)phenyl]-1-formyl-N-[4-[[[1-propylimidazol-5-yl]methyl]sulfinyl]phenyl]-1,2,3,4-tetrahydro-1-benzoazocine-5-carboxamide (2.92 g) in methanol (75 ml) was added 3N hydrochloric acid (29.1 ml), after which the mixture was stirred at 80° C. for 7 hours. After diluting with water at 0° C., the product was neutralized with potassium carbonate. After extracting with ethyl acetate, the reaction product was washed with aqueous saturated solution of sodium bicarbonate and saturated brine, and dried with magnesium sulfate. The solvent was distilled off under reduced pressure, and the resultant residue was purified with a basic silica gel column chromatography (methanol:ethyl acetate=1:67) to give (−)-8-[4-(2-butoxyethoxy)phenyl]-N-[4-[[[1-propylimidazol-5-yl]methyl]sulfinyl]phenyl]-1,2,3,4-tetrahydro-1-benzoazocine-5-carboxamide (1.97 g) (Compound 30) as a yellow amorphous material.

Provenance & Evidence