3-Methoxybenzaldehyde → HCID 58423788, compound

Participants

Reaction Steps

A mixture of 1-(5-bromo-2-hydroxy-phenyl)-ethanone (18 g, 84.1 mmol), 3-methoxy-benzaldehyde (11.4 g, 84.1 mmol) and borax (32 g, 84.1 mmol) in ethanol (112 mL) and H2O (187 mL) was refluxed for one day. The reaction mixture was cooled, diluted with an equal volume of H2O and extracted with ether. The ether was dried over anhydrous Na2SO4, filtered, and evaporated to give 6-bromo-2-(3-methoxyphenyl)chroman-4-one (10 g, 36%). 1H-NMR (CDCl3): 2.71 (d, 1H), 2.99 (t, 1H), 3.75 (s, 3H), 5.38 (d, 1H), 6.90 (m, 4H), 7.27 (t, 1H), 7.51 (d, 1H), 7.95 (s, 1H).

Provenance & Evidence