sodium dihydrogenphosphate; NaClO2 in N-methyl-acetamide; water; ethyl acetate

1: 76 percent / N-bromosuccinimide / 2,2'-azobisisobutyronitrile / CCl4 / 1 h / Heating 2: 1. Mg; / 1. ether, reflux, 3h; 2. ether View Scheme

1: 51 percent / anh. ammonium acetate / acetic acid; benzene / 4 h / Heating 2: 94 percent / 10percent NaOH / 1 h / 75 °C 3: 53 percent / iodine / 1,2-dimethoxy-ethane / 240 h / Ambient temperature View Scheme

magnesium 1. ether, reflux, 3h; 2. ether; Yield given. Multistep reaction;

copper in quinoline T=200°C; 2 h;