N-bromosuccinmide; triphenylphosphine in benzene 2 h; Ambient temperature;

1: 1.) sulfur / 1.) 80 deg C, 1 h, 2.) reflux, 4 h 2: 93 percent / KOH / aq. ethanol / 9 h / Heating 3: 97 percent / HCl / 20 h / Ambient temperature 4: 97 percent / LiAlH4 / diethyl ether / 4 h / Ambient temperature 5: 88 percent / N-bromosuccinimide/triphenylphosphine / benzene / 2 h / Ambient temperature View Scheme

1: 97 percent / HCl / 20 h / Ambient temperature 2: 97 percent / LiAlH4 / diethyl ether / 4 h / Ambient temperature 3: 88 percent / N-bromosuccinimide/triphenylphosphine / benzene / 2 h / Ambient temperature View Scheme

1: 97 percent / LiAlH4 / diethyl ether / 4 h / Ambient temperature 2: 88 percent / N-bromosuccinimide/triphenylphosphine / benzene / 2 h / Ambient temperature View Scheme

1: 93 percent / KOH / aq. ethanol / 9 h / Heating 2: 97 percent / HCl / 20 h / Ambient temperature 3: 97 percent / LiAlH4 / diethyl ether / 4 h / Ambient temperature 4: 88 percent / N-bromosuccinimide/triphenylphosphine / benzene / 2 h / Ambient temperature View Scheme

1: 94 percent / benzene / 72 h / Heating 2: potassium ferricyanide, KOH 3: 82 percent / Raney nickel / aq. ethanol / 6 h / Heating View Scheme