Water → 1,4-Bis[2-(4-hydroxyphenyl)ethylamino]anthracene-9,10-dione

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Reaction Steps

A mixture of 21 grams (0.09 mole) of leucoquinizarine, 30 grams (0.22 mole) of p-(2-aminoethyl)phenol in 150 milliliters of pyridine was refluxed for 12 hours. The mixture was cooled to room temperature and poured into 2 liters of water. Thereafter, the product was filtered, washed with water, and recrystillized from acetic acid to yield 26 grams, (60%) of 1,4-bis[2-(p-hydroxyphenyl)ethylamino]anthraquinone as a blue powder, m.p. 240°-242° C.; vis (DMF), λmax 644 nm (ε16,600); 598 nm (ε14,100); ms 478 (M+); Calcd. for C30H26N2O4 : C, 75.29; H, 5.48; N, 5.86; O, 13.38; Found: C, 75.46; H, 5.32; N, 5.69; O, 13.26.

Provenance & Evidence