Water → HCID 22152298, compound

Participants

Reaction Steps

A solution of 5.27 g (27.4 mmol) of 2,3-dihydro-6-hydroxy-3,3-dimethyl-5-benzofurancarboxaldehyde and 5.86 g (32.9 mmol) of N-bromosuccinimide in 135 ml of methylene chloride was stirred at ambient temperature for 3 h. Water (400 ml) was added. The organic phase was dried and evaporated. The residue was chromatographed on silica gel (150 g) using a gradient from 20:80 (v/v) ether:hexane to 40:60 (v/v) ether:hexane eluent. There was obtained 7.0 g (25.8 mmol, 94%) of 7-bromo-2,3-dihydro-6-hydroxy-3,3-dimethyl-5-benzofurancarboxaldehyde. A sample was crystallized from toluene: mp 152°-154° C.

Provenance & Evidence