1: With 1,4-diaza-bicyclo[2.2.2]octane; W(CO)6 in toluene T=20°C; 20 h; Inert atmosphereUV-irradiation; 2: With trimethylamine-N-oxide in tetrahydrofuran T=20°C; 4 h; 3: With 1,8-diazabicyclo[5.4.0]undec-7-ene in benzene T=20°C;

1: With 1,4-diaza-bicyclo[2.2.2]octane; W(CO)6 in toluene T=20°C; 20 h; Inert atmosphereUV-irradiation; 2: With trimethylamine-N-oxide in tetrahydrofuran T=20°C; 4 h;