1.1: 82 percent / TBAF / dimethylformamide / 24 h / 23 °C 2.1: 80 percent / DCC; CuCl / acetonitrile / 18 h / 60 °C 3.1: 50 percent / Zn; AcOH / tetrahydrofuran / 0.25 h / 0 °C 4.1: 77 percent / CAN; HNO3 / ethanol / -45 °C 5.1: 98 percent / 4 N HCl / tetrahydrofuran / 23 °C 6.1: 60 percent / aq. CsCO3 / methanol; dimethylformamide / 23 °C 7.1: Me4NB(OAc)3H / acetic acid; acetonitrile / 24 h / -40 °C 7.2: 96 percent / 2,6-lutidine / CH2Cl2 / 2.5 h / -78 °C 8.1: 99 percent / H2 / Pd(OH)2 / ethyl acetate; methanol / 23 °C 9.1: 74 percent / PhSO2Cl; pyridine / 48 h / 0 °C 10.1: 70 percent / TBAF; AcOH / tetrahydrofuran / 4 h / 0 °C View Scheme

4-(N,N-dimethlyamino)pyridine; Sn(thiophenolate)4; tributylphosphine; diethylazodicarboxylate in dichloromethane T=0°C; 0.166667 h;

borane-ammonia; Au-TiO2 nanoparticles in ethanol T=20°C; 1 h; Inert atmosphere;