sodium tetrahydroborate; (S)-valinol; zirconium tetrachloride 1) THF, r.t. 2) THF, r.t.; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;

sodium tetrahydroborate; (S)-valinol; zirconium tetrachloride 1) THF, r.t. 2) THF, r.t.; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;