Dipotassium 5-(2-phenylethynyl)isophthalate → 5-(Phenylethynyl)isophthalic acid
Reaction equation
[C:1]1([C:7]#[C:8][C:9]2[CH:10]=[C:11]([C:18]([O-:20])=[O:19])[CH:12]=[C:13]([CH:17]=2)[C:14]([O-:16])=[O:15])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[K+].[K+]>O>[C:1]1([C:7]#[C:8][C:9]2[CH:10]=[C:11]([C:18]([OH:20])=[O:19])[CH:12]=[C:13]([CH:17]=2)[C:14]([OH:16])=[O:15])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1Participants
3
Reactant 1
Product 1
Reagents, catalysts & solvents 1
Procedure
Dipotassium 5-(2-phenylethynyl)isophthalate in an amount of 6.5 g (0.019 moles) was dissolved into 20 ml of ion-exchanged water and insoluble substances were removed by filtration with a 5C filter paper. To the obtained filtrate, a 5 moles/liter hydrochloric acid was added under stirring until the pH became 1. The formed solid substance was separated by filtration, washed with ion-exchanged water and filtered. The filtration and the washing were repeated twice. The obtained solid substance was dried at 50° C. under a reduced pressure and 5.0 g of 5-(2-phenylethynyl)isophthalic acid was obtained (the yield: 99.5%).