Hydrochloric Acid → 4-Bromo-2-(3-hydroxy-1,1,3-trimethyl-butyl)-phenol

Participants

Reaction Steps

A solution of 6-bromo-4,4-dimethyl-chroman-2-one (1 g, 3.92 mmol) in anhydrous tetrahydrofuran (20 mL) was treated with 3M solution of ethyl magnesium bromide (2.6 mL) and stirred at ambient temperature for 2hours. The reaction mixture was poured into cold dilute hydrochloric acid and extracted with ethyl acetate (×2). The combined organic extract was dried over anhydrous sodium sulfate, filtered and evaporated in vacuo to afford a residue which was subjected to flash column chromatography over silica gel (230-400 mesh) using 10% ethyl acetate in hexane as the eluent to afford the title compound as a pale yellow solid (1.1 g, 100%).

Provenance & Evidence