1: 92 percent / 4,4-dimethylaminopyridine / pyridine / 3 h / 100 °C 2: KH (22percent) / benzene / Ambient temperature 3: 92 percent / p-toluenesulfonic acid monohydrate / methanol / Heating 4: 1.) NEt3; 2.) KCl (0.1N) / 1.) CHCl3, room temp., 6h; 40 deg C, 12 h; 2.) 1 h View Scheme

1: 88 percent / KH (22percent) / benzene / 2 h / Heating 2: 91 percent / HCl (2N) / tetrahydrofuran / 3 h / Ambient temperature 3: Pb(OAc)4 / benzene / 2 h / Ambient temperature 4: NaBH4 / methanol; tetrahydrofuran / Ambient temperature 5: 1.) NEt3; 2.) KCl (0.1N) / 1.) CHCl3, room temp., 6h; 40 deg C, 12 h; 2.) 1 h View Scheme

1: KH (22percent) / benzene / Ambient temperature 2: 92 percent / p-toluenesulfonic acid monohydrate / methanol / Heating 3: 1.) NEt3; 2.) KCl (0.1N) / 1.) CHCl3, room temp., 6h; 40 deg C, 12 h; 2.) 1 h View Scheme

1: NaBH4 / methanol; tetrahydrofuran / Ambient temperature 2: 1.) NEt3; 2.) KCl (0.1N) / 1.) CHCl3, room temp., 6h; 40 deg C, 12 h; 2.) 1 h View Scheme

1: Pb(OAc)4 / benzene / 2 h / Ambient temperature 2: NaBH4 / methanol; tetrahydrofuran / Ambient temperature 3: 1.) NEt3; 2.) KCl (0.1N) / 1.) CHCl3, room temp., 6h; 40 deg C, 12 h; 2.) 1 h View Scheme

1: 91 percent / HCl (2N) / tetrahydrofuran / 3 h / Ambient temperature 2: Pb(OAc)4 / benzene / 2 h / Ambient temperature 3: NaBH4 / methanol; tetrahydrofuran / Ambient temperature 4: 1.) NEt3; 2.) KCl (0.1N) / 1.) CHCl3, room temp., 6h; 40 deg C, 12 h; 2.) 1 h View Scheme

1: 92 percent / p-toluenesulfonic acid monohydrate / methanol / Heating 2: 1.) NEt3; 2.) KCl (0.1N) / 1.) CHCl3, room temp., 6h; 40 deg C, 12 h; 2.) 1 h View Scheme

1: 78 percent / HCl (2N) / tetrahydrofuran / Ambient temperature 2: 92 percent / 4,4-dimethylaminopyridine / pyridine / 3 h / 100 °C 3: KH (22percent) / benzene / Ambient temperature 4: 92 percent / p-toluenesulfonic acid monohydrate / methanol / Heating 5: 1.) NEt3; 2.) KCl (0.1N) / 1.) CHCl3, room temp., 6h; 40 deg C, 12 h; 2.) 1 h View Scheme

1: 1.) NEt3; 2.) KCl (0.1N) / 1.) CHCl3, room temp., 6h; 40 deg C, 12 h; 2.) 1 h View Scheme

Yield given. Multistep reaction;