N-bromobutanimide → 6-Bromo-7-(bromomethyl)-1,1,4,4-tetramethyl-1,2,3,4-tetrahydronaphthalene

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Reaction Steps

To a solution of 12.0 g (281 mmol) of 2-bromo-3-methyl-5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalene in 84 mL carbon tetrachloride was added 7.59 g (42.7 mmol) of N-bromosuccinimide and 0.310 g (1.28 mmol) of benzoyl peroxide. This was heated to reflux for 40 minutes and then cooled to room temperature. To the cooled solution was added 170 mL petroleum ether and the solution was filtered and concentrated in vacuo to give 17.3 g of 2-bromo-3-bromomethyl-5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalene which was used without further purification.

Provenance & Evidence