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 mole) of potassium hydroxide (85%) were placed and potassium hydroxide was dissolved into n-butanol by heating under the refluxing condition. To the resultant solution, 95 g (0.344 mole) of 4-[3,5-bis(methoxycarbonyl)-phenyl]-2-methyl-3-butyn-1-ol synthesized above in (2) was added and the resultant mixture was heated under the refluxing condition for 30 minutes. The mixture was then cooled in an ice bath. The formed crystals were separated by filtration, washed twice with 1 liter of methanol and dried at 60° C. in vacuo and 88.87 g (the yield: 97%) of dipotassium 5-ethynylisophthalate was obtained.

Provenance & Evidence