Ethylenediamine → Anthracene

Participants

Reaction Steps

Prepared by the method of McCarthy, P. J., et al., J. Am. Chem. Soc., 1955, 77, 5820. 1,2-Diaminoethane (1) (3.0 g, 3.3 mL, 49.9 mmol) was dissolved in ethanol (70 mL) and acetylacetone (2) (10.3 mL, 99.8 mmol) was added in a steady stream over a period of about 10 minutes whilst stirring the reaction mixture. The reaction was refluxed for 3 hours. After cooling, evaporation of the solvent in vacuo left a yellow solid which was purified by the addition of diethyl ether (ca. 100 mL). The desired ligand (3) (7.3 g, 32.4 mmol, 65%) was obtained as an off-white crystalline solid by suction filtration.

Provenance & Evidence