oxygen; hydroquinone; hematoporphyrin IX in dichloromethane 3.1 h; Ambient temperatureIrradiation;

2-acetonaphthalene in hexane T=0°C; 2 h; Irradiation;

in toluene T=400°C; P=15 Torr;

in dichloromethane 4.1 h; Ambient temperatureIrradiation; Yields of byproduct given;

2-acetonaphthalene in methanol 1.58333 h; Ambient temperatureIrradiation;

1: 81 percent / acetone / 5 h / -78 °C / Irradiation 2: 70 percent / 2-acetylnaphthalene / methanol / Irradiation; 1.) 0 deg C, 2 h, 2.) r.t., 12 h 3: 61 percent / 2-acetylnaphthalene / diethyl ether / 5 h / Ambient temperature; Irradiation View Scheme

2-acetonaphthalene in diethyl ether 4.5 h; Ambient temperatureIrradiation;