Potassium Hydroxide → HCID 12080904, compound

Participants

Reaction Steps

Into a 5 liter four-necked flask equipped with a thermometer, a Dimroth condenser and a stirrer, 3 liters of n-butanol and 182 g (2.763 moles) of potassium hydroxide (85%) were placed and dissolved by heating under the refluxing condition. To the obtained solution, 95 g (0.344 moles) of 4-(3,5-bis(methoxycarbonyl)phenyl)-2-methyl-3-butyn-1-ol synthesized above was added and the resultant mixture was heated for 30 minutes under the refluxing condition. The reaction mixture was then cooled in an ice bath and the formed crystals were separated by filtration. The crystals were washed twice with 1 liter of ethanol and dried at 60° C. under a reduced pressure and 88.87 g of dipotassium 5-ethynyl-isophthalate was obtained (the yield: 97%).

Provenance & Evidence