1: phenylacetylene With n-butyllithium in tetrahydrofuran T=0°C; 0.25 h; Inert atmosphere; 2: N,N-(dimethylamino)-S-phenyl-S-trifluoromethyloxosulfonium trifluoromethanesulfonate in tetrahydrofuran T=-78 - 20°C; 2 h; Inert atmosphere;

1: 4-methyl phenyl acetylene With n-butyllithium in tetrahydrofuran T=0°C; 0.25 h; Inert atmosphere; 2: N,N-(dimethylamino)-S-phenyl-S-trifluoromethyloxosulfonium trifluoromethanesulfonate in tetrahydrofuran T=-78 - 20°C; 2 h; Inert atmosphere;

1: 4-ethynyl-1-methoxy-benzene With n-butyllithium in tetrahydrofuran T=0°C; 0.25 h; Inert atmosphere; 2: N,N-(dimethylamino)-S-phenyl-S-trifluoromethyloxosulfonium trifluoromethanesulfonate in tetrahydrofuran T=-78 - 20°C; 2 h; Inert atmosphere;