1: 85 percent / NaH / dimethylformamide 2: 89 percent / BBr3 / CH2Cl2 3: 99 percent / pyridine 4: 86 percent / K2CO3 / methanol 5: 74 percent / NaH / dimethylformamide 6: 100 percent / KF; HBr / dimethylformamide 7: 46 percent / K2CO3 / acetone; H2O 8: 61 percent / MeLi / tetrahydrofuran View Scheme