1: in tetrahydrofuran T=0 - 20°C; 2: With 4-Acetylaminobenzenesulfonyl Azide; 1,8-diazabicyclo[5.4.0]undec-7-ene in tetrahydrofuran T=20°C; 8 h; 3: With lithium hydroxide in tetrahydrofuran; water 8 h;

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 View Scheme

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