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: pentafuoroethyl p-chlorophenyl ketone in tetrahydrofuran; diethyl ether T=20°C; 2 h;

diethyl ether; 4-chlorophenyl-magnesium bromide

in diethyl ether