1: With 4,4'-di-tert-butylbiphenyl; lithium in tetrahydrofuran T=-78°C; Inert atmosphere; 2: With water in tetrahydrofuran T=-78 - 20°C; Inert atmosphere;

1: With 4,4'-di-tert-butylbiphenyl; lithium in tetrahydrofuran T=-78°C; Inert atmosphere; 2: With water in tetrahydrofuran T=-78 - 20°C; Inert atmosphere;