(molybdenum pentachloride)2 in dichloromethane T=23°C; 4 h; Inert atmosphere;

1.1: K2CO3; KI / acetonitrile / 1 h 1.2: 95 percent / acetonitrile / 40 h / Heating 2.1: 94 percent / N-bromosuccinimide 3.1: n-BuLi / tetrahydrofuran / 2 h / -78 °C 3.2: 90 percent / tetrahydrofuran 4.1: 60 percent / Pd(OAc)2; (o-tolyl)3-phosphine; K2CO3 / dimethyl ether; H2O / 3 h / Heating 5.1: 60 percent / N-bromosuccinimide 6.1: t-BuLi / tetrahydrofuran / 1 h / -78 °C 6.2: 40 percent / tetrahydrofuran 7.1: 60 percent / HCl; acetic acid View Scheme

hydrogenchloride; acetic acid

1.1: K2CO3; KI / acetonitrile / 1 h 1.2: 95 percent / acetonitrile / 40 h / Heating 2.1: 94 percent / N-bromosuccinimide 3.1: n-BuLi / tetrahydrofuran / 2 h / -78 °C 3.2: 90 percent / tetrahydrofuran 4.1: 60 percent / Pd(OAc)2; (o-tolyl)3-phosphine; K2CO3 / dimethyl ether; H2O / 3 h / Heating 5.1: 60 percent / N-bromosuccinimide 6.1: t-BuLi / tetrahydrofuran / 1 h / -78 °C 6.2: 40 percent / tetrahydrofuran 7.1: 60 percent / HCl; acetic acid View Scheme

1.1: 94 percent / N-bromosuccinimide 2.1: n-BuLi / tetrahydrofuran / 2 h / -78 °C 2.2: 90 percent / tetrahydrofuran 3.1: 60 percent / Pd(OAc)2; (o-tolyl)3-phosphine; K2CO3 / dimethyl ether; H2O / 3 h / Heating 4.1: 60 percent / N-bromosuccinimide 5.1: t-BuLi / tetrahydrofuran / 1 h / -78 °C 5.2: 40 percent / tetrahydrofuran 6.1: 60 percent / HCl; acetic acid View Scheme

1.1: n-BuLi / tetrahydrofuran / 2 h / -78 °C 1.2: 90 percent / tetrahydrofuran 2.1: 60 percent / Pd(OAc)2; (o-tolyl)3-phosphine; K2CO3 / dimethyl ether; H2O / 3 h / Heating 3.1: 60 percent / N-bromosuccinimide 4.1: t-BuLi / tetrahydrofuran / 1 h / -78 °C 4.2: 40 percent / tetrahydrofuran 5.1: 60 percent / HCl; acetic acid View Scheme

1.1: 60 percent / Pd(OAc)2; (o-tolyl)3-phosphine; K2CO3 / dimethyl ether; H2O / 3 h / Heating 2.1: 60 percent / N-bromosuccinimide 3.1: t-BuLi / tetrahydrofuran / 1 h / -78 °C 3.2: 40 percent / tetrahydrofuran 4.1: 60 percent / HCl; acetic acid View Scheme

1.1: t-BuLi / tetrahydrofuran / 1 h / -78 °C 1.2: 40 percent / tetrahydrofuran 2.1: 60 percent / HCl; acetic acid View Scheme

1.1: 60 percent / N-bromosuccinimide 2.1: t-BuLi / tetrahydrofuran / 1 h / -78 °C 2.2: 40 percent / tetrahydrofuran 3.1: 60 percent / HCl; acetic acid View Scheme

1.1: methanesulfonic acid / tetrachloromethane / 40 h / 80 °C 2.1: sodium hydride / N,N-dimethyl-formamide / 0.25 h / 23 °C 2.2: 72 h / 90 °C 3.1: (molybdenum pentachloride)2 / dichloromethane / 4 h / 23 °C / |Inert atmosphere View Scheme