1: N-methylmorpholine / tetrahydrofuran / 0.17 h / -20 °C 2: tetrahydrofuran; H2O; dimethylformamide / 1 h / Ambient temperature 3: hydrogen / 10percent Pd/C / methanol / 8 h / Ambient temperature View Scheme

1: tetrahydrofuran; H2O; dimethylformamide / 1 h / Ambient temperature 2: hydrogen / 10percent Pd/C / methanol / 8 h / Ambient temperature View Scheme

hydrogen; palladium on activated charcoal in methanol 8 h; Ambient temperature; Yield given;