potassium carbonate; butan-1-ol; palladium diacetate; triphenylphosphine T=100°C; 1 h;

1: With sodium dihydrogenphosphate in tetrahydrofuran; water T=20°C; 0.166667 h; 2: With sodium chlorite; dihydrogen peroxide in tetrahydrofuran; water T=20°C; 3 h;