Azobenzene in tetrahydrofuran 1.) -78 deg C, 2.) room temp., 3 h further oxidizing agents; Yield given;

in tetrahydrofuran Ar-atmosphere; dropwise addn. of K2C8H8 to Ti-complex (during 30 min), stirring (room temp., 90 min), refluxing (15 min); solvent removal (reduced pressure), sublimation (120°C/0.2 Torr); elem. anal.;

in not given byproducts: KCl; according to Streitweiser, A., jr. et al., J. Am. Soc. 90 (1978) 8644; washing (water), heating (vac.); UV photoelectron spectroscopy;

in not given byproducts: KCl; Ar-atmosphere;

in THF-d8 (tetrahydrofuran-d8); deuterated toluene not isolated, detd. by (1)H-NMR spectroscopy;