Phosphorus tribromide → Methyl 4-bromo-1,2,3,4-tetrahydronaphthalene-1-carboxylate

関与物質

反応手順

Methyl 4-hydroxy-1,2,3,4-tetrahydronaphthalene-1-carboxylate (3.68 g, 17.84 mmol) was taken-up in dichloromethane (17.8 ml) and the solution was purged and then evacuated with argon. Phosphorus tribromide (3.4 ml, 36 mmol) was added, and the resulting mixture was allowed to stir at room temperature over the weekend. The reaction was diluted with aqueous sodium bicarbonate and product was extracted with dichloromethane (3×). The organic layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (0 to 100% EtOAc/hexanes) to afford racemic methyl 4-bromo-1,2,3,4-tetrahydronaphthalene-1-carboxylate as a light yellow oil.

情報源と証拠