1: 68 percent / tetramethylguanidine, Pb(OAc)4 / dimethylformamide / 0.5 h / -78 °C 2: 96 percent Spectr. / pentane / 0.13 h / 0 °C / Irradiation View Scheme

in pentane T=0°C; 0.133333 h; Irradiation;

isopropenylbenzene in N,N-dimethyl-formamide T=77°C; Irradiationirradiarion with various light, in various solvents, and at various temperatures; MechanismRate constant;

T=0°C; Irradiationreaction with various trapping agents in various solvents, effect of alcohol concentration; MechanismRate constant;