sodium tetrahydroborate; sodium periodate 1.) ethanol, water, 10 min, 2.) ethanol, water, 10 min; Yield given. Multistep reaction. Title compound not separated from byproducts;

sodium tetrahydroborate; sodium periodate 1.) ethanol, water, 10 min, 2.) ethanol, water, 10 min; Yield given. Multistep reaction. Title compound not separated from byproducts;