N-bromosuccinmide in tetrachloromethane T=20°C; 1 h; Irradiation;

1.1: n-butyllithium / tetrahydrofuran / -78 °C 1.2: 92 percent / tetrahydrofuran / Heating 2.1: 45 percent / benzoyl peroxide; N-bromosuccinimide / hexane / 2.5 h / Heating View Scheme

1.1: n-butyllithium / tetrahydrofuran / -78 °C 1.2: 92 percent / tetrahydrofuran / Heating 2.1: 45 percent / benzoyl peroxide; N-bromosuccinimide / hexane / 2.5 h / Heating View Scheme