1: 55 percent / LDA / tetrahydrofuran / -78 °C 2: 90 percent / K2CO3 / methanol / Ambient temperature 3: 12 percent / aluminum chloride / 12 h / 100 - 120 °C View Scheme

1: Irradiation 2: 55 percent / LDA / tetrahydrofuran / -78 °C 3: 90 percent / K2CO3 / methanol / Ambient temperature 4: 12 percent / aluminum chloride / 12 h / 100 - 120 °C View Scheme

1: 90 percent / K2CO3 / methanol / Ambient temperature 2: 12 percent / aluminum chloride / 12 h / 100 - 120 °C View Scheme

aluminium trichloride T=100 - 120°C; 12 h;