6-Bromo-4-cyclohexyloxy-1,1-dimethyl-1,2,3,4-tetrahydronaphthalene → 4-Cyclohexyloxy-6-ethynyl-1,2,3,4-tetrahydro-1,1-dimethylnaphthalene

Beteiligte Stoffe

Reaktionsschritte

Employing the same general procedure as for the preparation of 6-ethynyl-3,4-dihydro-4,4-dimethylnaphthalen-1(2H)-one (Compound K), 2.1 g (8.8 mmol) of 6-bromo-4-cyclohexyloxy-1,1-dimethyl-1,2,3,4-tetrahydronaphthalene (Compound J) was converted into the title compound using 1 g (10.2 mmol) of trimethylsilyl acetylene, 0.14 g (0.20 mmol) of bis(triphenylphosphine)palladium(II) chloride, 19 mg (0.1 mmol) of cuprous iodide and 80 mg (0.6 mmol) of K2CO3.

Herkunft & Nachweise