sodium methylate in N,N-dimethyl-formamide 1.) 35 deg C, 10 min 2.) room temp. - 50 deg C, 2 h;

1: 20.7 percent / Sodium methoxide, / dimethylformamide / 1.) 35 deg C, 10 min 2.) room temp. - 50 deg C, 2 h 2: 94 percent / 3N aq. HCl / methanol / 17 h / Ambient temperature View Scheme