Allyl bromide → HCID 59842156, compound

Participants

Reaction Steps

4-Bromosalicylaldehyde (4.02 g, 20.0 mmol) [prepared from 3-bromophenyl analogous to the procedure of Casiraghi, et. al. Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1978), 318-21] was dissolved in anhydrous N,N-dimethylformamide (13 mL). Potassium carbonate (3.9 g, 28.0 mmol) was added as a solid to give a yellow suspension. Allyl bromide (2.6 mL, 3.63 g, 30.0 mmol) was added via syringe. The reaction stirred for 17 h at room temperature and was then diluted with water and extracted three times with 1:1 ethyl acetate-hexane. The combined organic layers were washed with water (5×), brine, dried over sodium sulfate, filtered and concentrated to afford 2-(allyloxy)-4-bromobenzaldehyde (4.83 g, 100% yield) as a yellow solid which was used without further purification in the next step; Rf 0.38 (1:9 ethyl acetate-hexane); MS [M+H]+241.0.

Provenance & Evidence