1: With potassium salt of diphenylphosphine anion in tetrahydrofuran T=-78°C; 2 h; Inert atmosphere; 2: With hydrogenchloride in tetrahydrofuran; water T=20°C; 0.5 h; Inert atmosphere;

1: With potassium salt of diphenylphosphine anion in tetrahydrofuran T=-78°C; 2 h; Inert atmosphere; 2: With hydrogenchloride in tetrahydrofuran; water T=20°C; 0.5 h; Inert atmosphere; 3: With sodium hydrogencarbonate in tetrahydrofuran; water Inert atmosphere;