1: 1 h / Ambient temperature 2: 2,6-lutidine / CH2Cl2; tetrahydrofuran / Ambient temperature 3: 96 percent / H2 / 10percent Pd-C / methanol / Ambient temperature View Scheme

1: 1 h / Ambient temperature 2: 2,6-lutidine / CH2Cl2; tetrahydrofuran / Ambient temperature 3: 92 percent / H2 / 10percent Pd-C / methanol / Ambient temperature View Scheme