water pH:8.0;

in benzene-d6 T=400°C; flash vacuum thermolysis;

1: 86 percent / 4-DMAP 2: 69 percent / NBS/dibenzoyl peroxide / CCl4 / 0.42 h / 80 °C / Irradiation 3: 1.) DMSO/NaHCO3, 2.) (BOC)2O/DMAP / 1.) DMSO, 150 deg C, 20 min; 2.) CH3CN, 25 deg C, 10 min 4: 65 percent / DAST / neat (no solvent) / 12 h / 30 °C 5: 51 percent / benzene-d6 / 400 °C / flash vacuum thermolysis View Scheme

1: 69 percent / NBS/dibenzoyl peroxide / CCl4 / 0.42 h / 80 °C / Irradiation 2: 1.) DMSO/NaHCO3, 2.) (BOC)2O/DMAP / 1.) DMSO, 150 deg C, 20 min; 2.) CH3CN, 25 deg C, 10 min 3: 65 percent / DAST / neat (no solvent) / 12 h / 30 °C 4: 51 percent / benzene-d6 / 400 °C / flash vacuum thermolysis View Scheme

1: 65 percent / DAST / neat (no solvent) / 12 h / 30 °C 2: 51 percent / benzene-d6 / 400 °C / flash vacuum thermolysis View Scheme

1: 1.) DMSO/NaHCO3, 2.) (BOC)2O/DMAP / 1.) DMSO, 150 deg C, 20 min; 2.) CH3CN, 25 deg C, 10 min 2: 65 percent / DAST / neat (no solvent) / 12 h / 30 °C 3: 51 percent / benzene-d6 / 400 °C / flash vacuum thermolysis View Scheme