Potassium hydroxide ethanol → 5-Bromo-2-(7-bromo-9,9'-Dioctyl-9H-fluoren-2-yl)benzoic acid

Participants

Reaction Steps

35 g (51.2 mmol) 16 is suspended in 300 ml ethanol and treated with 50 ml 50% KOH/ethanol solution and heated to reflux for 3 h. After cooling to room temperature with reaction mixture is diluted with 200 ml ethanol, with precipitation is collected by filtration, the residue is washed with ethanol and dried in vacuum. 35 g (yield: 98%) of a white solid can be obtained.

Provenance & Evidence