4-Ethynyl-1-[1-(2,2-dimethylpropyloxy)-cyclopropyl]3-methyl-benzene → Ethyl4-[4-[1-(2,2-dimethylpropyloxy)-cyclopropyl]-3-methyl-phenylethynyl]-benzoate

Beteiligte Stoffe

Reaktionsschritte

Using General Procedure F; 4-ethynyl-1-[1-(2,2-dimethylpropyloxy)-cyclopropyl]-3-methyl-benzene (Intermediate 85, 75.0 mg, 0.31 mmol) and ethyl-4-iodo benzoate (Reagent A, 86.0 mg, 0.31 mmol) in triethylamine (5 mL) was treated with copper(I)iodide (21.0 mg, 0.11 mmol) and sparged with argon for 5 minutes. Dichlorobis(triphenylphosphine)-palladium(II) (78 mg, 0.11 mmol) was added and the reaction mixture was stirred overnight at room temperature. Column chromatography (2-4% EtOAc-hexanes) afforded 60.0 mg (50%) of the title compound as an orange solid.

Herkunft & Nachweise