1: 92 percent / KOH / methanol; H2O / 1. 55 deg C, 7 h, 2. r.t., 15 h 2: 71 percent / Pb(OAc)4, Cu(OAc)2*H2O, pyridine / benzene / 2 h / Heating 3: 1. 9-BBN, 2. 3N NaOH, 26percent H2O2 / 1. THF, r.t., 5 h, 2. r.t., 17 h View Scheme

1: 92 percent / KOH / methanol; H2O / 1. 55 deg C, 7 h, 2. r.t., 15 h 2: 71 percent / Pb(OAc)4, Cu(OAc)2*H2O, pyridine / benzene / 2 h / Heating 3: 1. 9-BBN, 2. 3N NaOH, 26percent H2O2 / 1. THF, r.t., 5 h, 2. r.t., 17 h 4: 98 percent / pyridine / 12 h / Ambient temperature View Scheme

potassium tert-butylate 1. THF, -30 deg C, 15 min, 2. THF, a. -78 deg C, 3 h, b. r.t., 15 h; Yield given. Multistep reaction;

potassium hydroxide in methanol; water 1. 55 deg C, 7 h, 2. r.t., 15 h;

1: 92 percent / KOH / methanol; H2O / 1. 55 deg C, 7 h, 2. r.t., 15 h 2: 71 percent / Pb(OAc)4, Cu(OAc)2*H2O, pyridine / benzene / 2 h / Heating View Scheme