反应详情

23 g (0.067 mol) of 9-(4-bromo-butyl)-9H-fluorene-9-carboxylic acid are dissolved in 40 ml of dichloromethane, and combined with three drops of dimethylformamide and 6.96 ml (0.081 mol) of oxalyl chloride, dissolved in 10 ml of dichloromethane, under nitrogen at 0° C. The mixture is stirred for 3 hours at ambient temperature. Then the solvent is eliminated and the crude product is reacted further without additional purification.