tetrabutyl ammonium fluoride in tetrahydrofuran T=-78 - 0°C; 0.75 h;

tetrabutyl ammonium fluoride; triethylamine; triphenylphosphine; bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide in tetrahydrofuran; DMF (N,N-dimethyl-formamide) T=20 - 60°C;