Sulfuric Acid → HCID 67107751, compound

Participants

Reaction Conditions

Reaction Steps

Methyl 2-methylnaphthalene-1-carboxylate (5.6 g) was dissolved in acetic acid (12 ml) and trifluoroacetic acid (12 ml) and cooled in an ice bath. 1,3-Dibromo-5,5-dimethylhydantoin (4.8 g) was added in one portion then concentrated sulphuric acid was added dropwise. The mixture was then stirred at 0° C. for 30 minutes. Sodium acetate (6.12 g) was added and the mixture was partitioned between DCM and water. The organic layer was separated, dried (Na2SO4) and filtered. The filtrate was evaporated to dryness and the residue was purified by chromatography on silica, eluting with a mixture of DCM and pentane with a gradient of 20-70% to give methyl 8-bromo-2-methylnaphthalene-1-carboxylate (3.27 g) as a colourless oil.

Provenance & Evidence