magnesium in diethyl ether

1.1: 93 percent / tetrahydrofuran 2.1: 90 percent / PTSA / benzene 3.1: methanol / 92 °C 3.2: 92 percent / NaBH4 4.1: 87 percent / PPH3; Imidazol / CH2Cl2 5.1: 71 percent / t-BuLi; ZnCl2 / tetrahydrofuran / 20 °C 6.1: 78 percent / HCl / tetrahydrofuran 7.1: 79 percent / NaOH / H2O / Heating View Scheme

copper(l) iodide; boron trifluoride diethyl etherate in tetrahydrofuran T=-30 - 0°C; 1 h;

1.1: 93 percent / tetrahydrofuran 2.1: 90 percent / PTSA / benzene 3.1: methanol / 92 °C 3.2: 92 percent / NaBH4 4.1: 87 percent / PPH3; Imidazol / CH2Cl2 View Scheme

Multistep reaction.;