in pyridine Ambient temperature;

1: 73 percent / iodine, triethylamine / methanol / 48 h / Heating 2: 8 percent Chromat. / diethyl ether / 4 h / Irradiation 3: 73 percent Chromat. / sulfuric acid / 2.5 h / Ambient temperature 4: 84 percent / pyridine / Ambient temperature View Scheme

1: 73 percent Chromat. / sulfuric acid / 2.5 h / Ambient temperature 2: 84 percent / pyridine / Ambient temperature View Scheme

1: 92 percent / p-toluenesulfonic acid / benzene / 6 h / Heating 2: 1.) lithium aluminum hydride, 2.) hydrochloric acid / 1.) ether, 4 h, 2.) room temperature, 3 h 3: 84 percent / pyridine / Ambient temperature View Scheme

1: 1.) lithium aluminum hydride, 2.) hydrochloric acid / 1.) ether, 4 h, 2.) room temperature, 3 h 2: 84 percent / pyridine / Ambient temperature View Scheme

1: 8 percent Chromat. / diethyl ether / 4 h / Irradiation 2: 73 percent Chromat. / sulfuric acid / 2.5 h / Ambient temperature 3: 84 percent / pyridine / Ambient temperature View Scheme