3. Explain why the hydroboration/oxidation of an alkene is regioselective (OH added to the less substituted carbon) (10 pts). 1) BH THE 2) H2O2, NaOH Me H OH Me H -H Me Me H 4. (a) Draw a Newman projection for the intermediate (bromonium) in the following reaction (5 pts). (b) Explain the regioselectivity and stereoselectivity based on the answer to (a) (5 pts). (c) Identify which compounds are the major products in the following reaction (2 pts) Br OH Br2, H20 OH OH Br Br " 1 Br +