Ethanol → 9-((5-Hydroxypentyl)aminomethyl)anthracene

Participants

Reaction Steps

A solution of anthraldehyde (9.595 g, 0.0465 mol) and 5-amino-1-pentanol (15.00 g, 0.116 mol) dissolved in 500 mL ethanol at 0° C. was stiffed for 3 h. After warming to room temperature the solvent was removed under reduced pressure, and 150 mL of ethanol containing NaBH4 (4.65 g, 0.1229 mol) was added slowly with stirring. The resulting mixture was allowed to stir overnight. The ethanol was removed under reduced pressure and to the brown oil/solid mixture was added 150 mL diethyl ether. Water was added dropwise to this solution until the evolution of hydrogen ceased, followed by the addition of 500 mL water. The ether phase was isolated, washed with 2×50 mL water, dried over sodium sulfate and filtered on a sintered-glass frit. Removal of the solvent afforded 12.17 g (89.2% yield) of 5 as a golden solid; 1H NMR (300.13 MHz, CD3CN) δ1.51 (m, 6H), 2.81 (t, 2H), 3.49 (t, 2H), 4.68 (s, 2H), 7.52 (m, 4H), 8.05 (d, 2H), 8.44 (m, 3H); 13C-{1H} NMR (75.4 MHz, CDCl3) δ133.1, 132.0, 131.7, 130.4, 128.6, 127.4, 126.2, 125.1, 62.9, 51.1, 45.8, 33.5, 30.3, 24.8.

Provenance & Evidence