Ethyl 4-[(5,6,7,8-tetrahydro-8,8-dimethyl-5-oxonaphth-2-yl)ethynyl]benzoate → Ethyl 4-[(5-cyclohexyloxy-5,6,7,8-tetrahydro-8,8-dimethyl-naphth-3-yl)ethynyl]benzoate

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Employing the same general procedure as for the preparation of ethyl 4-[(5,6,7,8-tetrahydro-8,8-dimethyl-5-oxonaphth-2-yl)ethynyl]benzoate (Compound 1), 90 mg (0.3 mmol) of 4-cyclohexyloxy-6-ethynyl-1,2,3,4-tetrahydro-1,1-dimethylnaphthalene (Compound N) was converted into the title compound using 88 mg (0.32 mmol) of ethyl 4-iodobenzoate, 70 mg (0.1 mmol) of bis(triphenylphosphine)palladium(II) chloride and 19 mg (0.1 mmol) of cuprous iodide.

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