tetrafluoroboric acid diethyl ether complex in tetradecafluorohexane T=80°C; Balz-Schiemann reaction; Autoclave;

1: 1-(2,6-dimethylphenyl)-3,3-diisopropyltriaz-1-ene With methyl iodide T=110°C; Inert atmosphere; 2: (trifluoromethyl)-trimethylsilane With potassium fluoride; copper(l) iodide in 1-methyl-pyrrolidin-2-one T=60°C; 16 h; Inert atmosphere;