hydrogenchloride; tert.-butyl lithium in tetrahydrofuran; hexane; water

1: With n-butyllithium in tetrahydrofuran; hexane; toluene T=-20°C; 1 h; 2: With tri-isopropoxy-borane in tetrahydrofuran; hexane; toluene T=-60 - 20°C; 7 h; 3: With hydrogenchloride in tetrahydrofuran; hexane; water; toluene 0.5 h;