Acetic Acid → 4'-Chloro-2-methoxychalcone

Participants

Reaction Steps

KOH (1.415 g, 25.2 mmol) was added to a solution of 1-(4-chlorophenyl)ethanone (3.9 g, 25.2 mmol) and 2-methoxybenzaldehyde (3.43 g, 25.2 mmol) in methanol (100 ml) at RT and the solution was stirred for 18 hours. The solution was concentrated under reduced pressure until a precipitate was formed. AcOH (1.444 ml, 25.2 mmol) was added and the mixture was cooled down to 0° C.-5° C. The mixture was stirred for 1 hour and the light yellow precipitate was separated by filtration and washed with cold methanol to afford 6.72 g (24.39 mmol, 97% yield) of the title compound. LCMS: (M+H)=273; tR=1.28 min (LC-MS 3). 1H-NMR (d6-DMSO, 600 MHz) δ ppm 8.12 (d, 2H) 8.04 (d, 1H) 7.98 (d, 1H) 7.86 (d, 1H) 7.62 (d, 2H) 7.45 (t, 1H) 7.10 (d, 1H) 7.02 (t, 1H) 3.88 (s, 3H).

Provenance & Evidence