1: in tetrahydrofuran T=-78°C; Inert atmosphere; 2: With hydrogenchloride in tetrahydrofuran; water T=-78 - 20°C; Inert atmosphere;

1: in tetrahydrofuran T=-78°C; 1 h; Inert atmosphere; 2: With hydrogenchloride in tetrahydrofuran; water T=-78 - 20°C;