10· The reaction below produces predominantly acetal W. Draw the structure ofw. H trace H 11. Treatment of benzosuberenone (shown below) with excess m-CPBA in the presence of NaHCOs affords compound X. Draw the structure of X. 0 m-CPBA (2 equiv NaHCOs, CH2Cl2 MeO Identify the major product of the following sequence of reactions. Be sure to indicate the product(s) of each step for possible partial credit 12. Ph 1 . MeMgBr, then NH4 2. PDC, CH,CI 3. Ph2CuLi, then NH4 4. PhyP-CHCH major product? 13· The reaction below produces mainly: Me trace H OH