Answers O OH O BrMg H 2 CrO 4 OH PCC HO 1. PBr 3 2. Mg ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ OH MgBr O OH HO H 2 CrO 4 1. PBr 3 2. Mg ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ H 2 SO 4 OH BrMg O + HO OH + PCC 1. PBr 3 2. Mg ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ OH O 1. PBr 3 2. Mg H 2 CrO 4 OH O MgBr OH ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Br PBr 3 OH MgBr + O Br OH PCC Mg ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Br HBr OH MgBr 1. PBr 3 2. Mg OH OCH 3 O ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ O H 2 CrO 4 OH MgBr O 1. PBr 3 2. Mg OH PCC OH ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ T T T 1. 2. 3. 4. 5. 6. 7. 1 Text T e T e