sodium hydroxide; acetic anhydride 1.) 3.5 h, reflux; 2.) MeOH, 1 min, reflux; Yield given. Multistep reaction;

1: 1.) AC2O; 2.) 2N NaOH / 1.) 3.5 h, reflux; 2.) MeOH, 1 min, reflux 2: 73 percent / active MnO2 / acetone View Scheme

1: 1.) AC2O; 2.) 2N NaOH / 1.) 3.5 h, reflux; 2.) MeOH, 1 min, reflux 2: 73 percent / active MnO2 / acetone 3: 98 percent / 3.3percent aq. NaOH 4: 64 percent / hydrogen / 5percent Pd-C / methanol View Scheme