1: 92 percent / triethylamine / N,N-dimethyl-acetamide / 6 h / 20 °C 2: 93 percent / hydrogen / palladium catalyst / ethanol; tetrahydrofuran / 48 h / 2068.59 Torr View Scheme

1: 92 percent / triethylamine / N,N-dimethyl-acetamide / 6 h / 20 °C 2: 93 percent / hydrogen / palladium catalyst / ethanol; tetrahydrofuran / 48 h / 2068.59 Torr View Scheme

in acetonitrile T=20°C;