Fumaric Acid → HCID 131715086, compound

Participants

Reaction Steps

In a manner similar to that of Example 1 (iii), 6-[4-(3-benzylaminopropionamido)phenyl]-5-methyl-4,5-dihydro-3(2H)-pyridazinone (21.8 g) and 1-[4-(2-cyclopropylmethoxyethyl)phenoxy]-2,3-epoxypropane (19.4 g) in n-propanol (200 ml) were stirred under reflux for 41/2 hours. The mixture was cooled and a solution of fumaric acid (6.96 g) in hot n-propanol (150 ml) added with stirring. Cooling (and seeding) and stirring overnight afforded 6-[4-[3-[2-hydroxy-3-[4-(2-(cyclopropylmethoxy)ethyl)phenoxy]-N-benzylpropylamino]propionamido]phenyl]-5-methyl-4,5-dihydro-3(2H)-pyridazinone hemifumarate (31.05 g), m.p. 125°-8° C.

Provenance & Evidence