in benzene T=25°C; 8 h;

sodium hydroxide in dichloromethane Irradiation (UV/VIS); a stirred soln. of Fe-complex and pentafulvene in CH2Cl2 was irradiated for 14 h with a 300-W sunlamp (Osram) in an atm. of N2, cooled to room temp., filtered, EtOH and 2 N NaOH were added, stirring was continued for another 90 min; layers were sepd., aq. layer dild., extd. with CH2Cl2, combined org. layers were washed twice with water, dried (Na2SO4), concd., residue was chromd. over alumina column (B II), recrystd. from ether-hexane or sublimed at 0.001 Torr;

in benzene T=25°C; 8 h;

triethylamine in benzene

ammonia T=40°C; P=7500.6 Torr; 168 h;

triethylamine in benzene