lithium chloride in water; dimethyl sulfoxide T=100°C; 3 h;

1: 1) NaH / 1) DMSO, 100 deg C, 40 min, 2a) RT, 30 min, 2b) 100 deg C, 1 h 2: 74 percent / LiCl / dimethylsulfoxide; H2O / 3 h / 100 °C View Scheme

iron; acetic acid T=100°C; 2 h;