1,3-Benzenedicarboxylic acid, 5-(2-phenylethynyl)-, potassium salt (1:2) → HCID 12080908, compound

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Reaction Steps

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%).

Provenance & Evidence