N,N,N',N',N'',N''-hexamethylphosphoric triamide; lithium diisopropyl amide in tetrahydrofuran T=-60 - -30°C; 2 h;

lithium diisopropyl amide in tetrahydrofuran; N,N,N',N',N'',N''-hexamethylphosphoric triamide T=-60 - -30°C; 2 h;

1: 85 percent / 30percent aq. KOH / methanol / 1 h / Ambient temperature 2: 90 percent / sodium benzeneselenolate / ethanol / 1 h / Ambient temperature View Scheme