Allyl bromide → 3-Allyloxy-4-methoxybenzaldehyde

Participants

Reaction Steps

Isovanillin (76 g) was dissolved in a stirred mixture of potassium carbonate (104 g) and acetone (450 mls) followed by the dropwise addition of allyl bromide (67 g) over ca. 20 mins. The mixture was refluxed for 5 hours, cooled and filtered. The solvent was removed from the filtrate under reduced pressure and the residue was distilled under vacuum to yield 3-allyloxy-4-methoxybenzaldehyde (85 g), b.p. 1.37-150° C. at 1.5 mbar.

Provenance & Evidence