Diethylamine → HCID 21509986, compound

Participants

Reaction Steps

To a solution of 61.0 g (0.2 mole) of 9-oxofluorene-2,7-dicarbonyl chloride dissolved in 600 ml of chloroform(hydrocarbon stabilized and stored over molecular sieves) is added 58.4 g (0.8 mole) of diethylamine in small increments. The solution is refluxed with stirring for an additional 4 hours, cooled, washed 3 times with water, dried over anhydrous sodium sulfate, filtered, and the volatile materials removed on a steam bath under vacuum. The resulting oil so obtained is triturated with pentane to effect solidification. The residue when recrystallized three times from ethyl acetate yields N,N,N',N'-tetraethyl-9-oxofluorene-2,7-dicarboxamide, m.p. of 142°-3°C, λmaxMeOH 265, and E 1cm1% 2011.

Provenance & Evidence