in tetrahydrofuran not isolated, reaction followed by IR spectroscopy;

dichloromethane in dichloromethane Ar-atmosphere; Ar ion laser (visible region), 258-288 K; not isolated, reaction followed by IR spectroscopy; further unidentified product;

in tetrahydrofuran Ar-atmosphere; Ar ion laser (514.5 nm); not isolated, reaction followed by ESR, IR and UV/VIS spectroscopy;