triethylamine in diethyl ether T=0°C; 1 h;

1.1: 33 percent / (i-C3H7)2NLi / tetrahydrofuran / 6 h / -20 - 20 °C 2.1: NaH / tetrahydrofuran / 0 - 20 °C 2.2: 80 percent / tetrahydrofuran / Heating 3.1: CH2Cl2 / 1.5 h / 0 - 20 °C 4.1: H2O / acetone / 1 h / 20 °C 5.1: 99 percent / (CH3)2NSF3 / CHCl3 / 0.33 h / 0 - 20 °C 6.1: 96 percent / Et3N / diethyl ether / 1 h / 0 °C View Scheme

1.1: NaH / tetrahydrofuran / 0 - 20 °C 1.2: 80 percent / tetrahydrofuran / Heating 2.1: CH2Cl2 / 1.5 h / 0 - 20 °C 3.1: H2O / acetone / 1 h / 20 °C 4.1: 99 percent / (CH3)2NSF3 / CHCl3 / 0.33 h / 0 - 20 °C 5.1: 96 percent / Et3N / diethyl ether / 1 h / 0 °C View Scheme

1: 99 percent / (CH3)2NSF3 / CHCl3 / 0.33 h / 0 - 20 °C 2: 96 percent / Et3N / diethyl ether / 1 h / 0 °C View Scheme

1: CH2Cl2 / 1.5 h / 0 - 20 °C 2: H2O / acetone / 1 h / 20 °C 3: 99 percent / (CH3)2NSF3 / CHCl3 / 0.33 h / 0 - 20 °C 4: 96 percent / Et3N / diethyl ether / 1 h / 0 °C View Scheme