tetrabutyl ammonium fluoride in tetrahydrofuran 0.5 h;

1: N,N-dimethyl-4-{[4-[(trimethylsilyl)ethynyl]phenyl]ethynyl}aniline With potassium hydroxide in tetrahydrofuran; methanol T=25°C; 4 h; 2: 4-(TMS-ethynyl)iodobenzene With bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide; diethylamine in tetrahydrofuran T=25°C; Sonogashira coupling reaction; 24 h;