hydrogenchloride; sodium disulfite 1.) THF, ethanol, water, steam bath, 4 h, 2.) THF, ethanol, 15 min, steam bath; Yield given. Multistep reaction;

hydrogenchloride; sodium disulfite 1.) THF, ethanol, water, steam bath, 4 h, 2.) THF, ethanol, 15 min, steam bath; Yield given. Multistep reaction;