that result when E-3-methyl-3-hexene reacts with

Draw the products (including stereochemistry) that result when E-3-methyl-3-hexene reacts with OsO4/NaHSO3 O3/(CH3)2S or BH3/H2O2/OH-Propose a way to make (2R 3R)-2 3-dibromobutane (and its enantiomer) from 2-butyne.