Resorcinol → 1-(2,4-Dihydroxyphenyl)-2-(3-hydroxyphenyl)ethan-1-one

Participants

Reaction Steps

A solution of resorcinol (3.56 g, 32.3 mmol), 2-(3-hydroxyphenyl)acetic acid (5.39 g, 35.4 mmol), and boron trifluoride etherate (12 mL) in toluene (10 mL) was heated at 90° C. for 2 h. The reaction mixture was allowed to cool to room temperature, and a solution of 12% sodium acetate in H2O (17 mL) was added. After stirring for 3 h, the resulting precipitate was collected by filtration to give 1-(2,4-dihydroxyphenyl)-2-(3-hydroxyphenyl)ethanone (4.47 g, 57%) as a yellow solid. 1H NMR (DMSO-d6): δ 12.57 (s, 1H), 10.67 (s, 1H), 9.34 (s, 1H), 7.92 (d, 1H), 7.09 (m, 2H), 6.65 (m, 2H), 6.40 (m, 1H), 6.25 (s, 1H), 4.14 (s, 2H).

Provenance & Evidence