carbon tetrabromide; triphenylphosphine in acetonitrile 24 h; Ambient temperature;

1: 89 percent / CBr4, Ph3P / acetonitrile / 24 h / Ambient temperature 2: 1.) n-BuLi / 1.) THF, 0 deg C, 3 h, 2.) 0 deg C to RT, 12 h 3: 2,2'-azobis(2-methylpropionitrile) (AIBN) / 3 h / Heating 4: 2,2'-azobis(2-methylpropionitrile) (AIBN), Bu3SnH / toluene / 3 h / Heating 5: 0.848 g / BBr3 / CH2Cl2 / 4 h / Ambient temperature View Scheme

Oxonereg;; tetra(n-butyl)ammonium hydrogensulfate; 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione in ethyl acetate T=70°C; 6.5 h;

hydrogen; palladium on activated charcoal in ethyl acetate

{CpRu[P(i-Pr)2(1-Me-4-tBu-imidazol-2-yl)]MeCN}*PF6 in acetone T=70°C; 4 h;