1: 4,4,4-trifluoro-1-(N-methoxy-N-methylamino)-1-phenyl-1-(trimethylsiloxyl)-2-butyne With tetrabutyl ammonium fluoride in tetrahydrofuran; diethyl ether T=-15°C; 0.166667 h; 2: 2,2,2-trifluoro-1-(4-phenoxyphenyl)-ethanone in tetrahydrofuran; diethyl ether T=20°C; 1 h;

1,1'-bis-(diphenylphosphino)ferrocene; bis(dibenzylideneacetone)-palladium(0) in tetrahydrofuran; toluene T=120°C; 30 h;

1: trifluoroacetic acid With lithium hydroxide hydrate T=5°C; 4 h; 2: 4-bromophenyl phenyl ether With iodine; magnesium in tetrahydrofuran T=20 - 65°C; Grignard reaction; 3: With hydrogenchloride in tetrahydrofuran; water T=20°C;

sodium carbonate in dimethyl sulfoxide

aluminium trichloride in dichloromethane T=0°C; 4 h;

aluminium trichloride in dichloromethane 15 h; Ambient temperature;

T=-78°C;