Rh2(Cap)4 in dichloromethane 2.5 h; Heating;

1.1: tetrahydrofuran / 0 - 20 °C 1.2: 4-acetamidobenzenesulfonyl azide; 1,8-diazabicyclo[5.4.0]undec-7-ene / tetrahydrofuran / 8 h / 20 °C 1.3: 77 percent / LiOH*H2O / tetrahydrofuran; H2O / 8 h 2.1: 96 percent / Rh2(cap)4 / CH2Cl2 / 2.5 h / Heating View Scheme

1.1: ethanol / 1 h / 20 °C 1.2: 88 percent / hydrogen / palladium on charcoal / ethanol / 12 h / 50 °C / 760 Torr 2.1: tetrahydrofuran / 0 - 20 °C 2.2: 4-acetamidobenzenesulfonyl azide; 1,8-diazabicyclo[5.4.0]undec-7-ene / tetrahydrofuran / 8 h / 20 °C 2.3: 77 percent / LiOH*H2O / tetrahydrofuran; H2O / 8 h 3.1: 96 percent / Rh2(cap)4 / CH2Cl2 / 2.5 h / Heating View Scheme