1: 58.3 g / sodium iodide / butan-2-one / 19 h / Heating 2: 16.7 g / dimethylformamide / 18 h / 95 °C 3: 1.1 g / Jones reagent / acetone / 0.5 h 4: 1.) hydrazine hydrate; 2.) cc. hydrochloric acid / 1.) methanol, reflux, 3 h; 2.) water View Scheme

1: 16.7 g / dimethylformamide / 18 h / 95 °C 2: 1.1 g / Jones reagent / acetone / 0.5 h 3: 1.) hydrazine hydrate; 2.) cc. hydrochloric acid / 1.) methanol, reflux, 3 h; 2.) water View Scheme

1: 1.1 g / Jones reagent / acetone / 0.5 h 2: 1.) hydrazine hydrate; 2.) cc. hydrochloric acid / 1.) methanol, reflux, 3 h; 2.) water View Scheme

hydrogenchloride; hydrazine hydrate 1.) methanol, reflux, 3 h; 2.) water; Yield given. Multistep reaction;