Methyl iodide → 1-(4-Bromo-3-methoxy-5,5-dimethyl-5,6,7,8-tetrahydro-naphthalen-2-yl) ethanone

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Reaction Steps

To a solution of 1-(4-bromo-3-hydroxy-5,5-dimethyl-5,6,7,8-tetrahydro-naphthalen-2-yl)-ethanone (Compound A-91, 11.8 g, 39.7 mmol), potassium carbonate (14.4 g, 119.1 mmol) in acetone (350 mL) was added methyl iodide (19.8 mL, 317.6 mmol). After heating to reflux for 16 h, the mixture was cooled to room temperature, diluted with water and extracted with diethyl ether. The combined ethereal layers were washed with water, brine, dried (Na2SO4), filtered and concentrated in vacuo to give the title compound as a yellow oil. The material was used in the next step without further purification.

Provenance & Evidence