1: 76 percent / LiCl, MsCl, 2,4,6-trimethylpyridine / dimethylformamide / 0 deg C to r.t., overnight 2: 86 percent / m-CPBA / CH2Cl2 / 48 h / Ambient temperature 3: 95 percent / K2CO3 / methanol / 56 h / Ambient temperature 4: 1) naphthalene, Na / 1) THF, -78 deg C, 30 min 5: 1) aq.2M HCl, H2, 2) 10percent aq. K2CO3 / 1) 10percent Pd/C / 1) EtOH, 5 atm, r.t, 12h View Scheme