Water → HCID 54731250, compound

Participants

Reaction Steps

To a mixed solvent of 150 ml of water and 150 ml of ethanol was added 22.3 g of 4,5-dichloro-2-(3'-hydroxypropyl)-3(2H)-pyridazinone (0.1 mol) and 19.6 g of potassium hydroxide (0.35 mol) and then heated under reflux for about 10 hours. After reaction, ethanol was removed under reduced pressure and added with water to filter off the insoluble matters. The filtrate was converted into acidity by diluted hydrochloric acid and the crystals produced were filtered off. The crystals thus obtained were washed with water and dried to give 14.5 g of 4-chloro-5-hydroxy-2-(3'-hydroxypropyl)-3(2H)-pyridazinone.

Provenance & Evidence