1.1: n-BuLi / tetrahydrofuran / 1 h / -78 °C 1.2: 65 percent / tetrahydrofuran / 6 h / -78 - 20 °C 2.1: 74 percent / 4 Angstroem molecular sieves; TBAF*3H2O / tetrahydrofuran / 3 h 3.1: 81 percent / DCC; DMAP / CH2Cl2 / 14 h / 20 °C 4.1: 80 percent / CH2Cl2 / [Mo{(t-Bu)(3,5-dimethylphenyl)N}3] / toluene / 8 h / 80 °C 5.1: 99 percent / quinoline; H2 / Lindlar catalyst / hexane; CH2Cl2 / 8 h / 20 °C 6.1: 79 percent / aq. HF / acetonitrile; diethyl ether / 8 h / 20 °C View Scheme