tetrakis(triphenylphosphine) palladium(0); polymer supported N-hydroxyphthalimide in tetrahydrofuran T=35°C; 12 h;

1: 71 percent / Rb2CO3; Cu(CH3CN)4PF6; 3,4,7,8-tetramethyl-1,10-phenanthroline / 1,2-dimethoxy-ethane / 12 h / 45 °C 2: 78 percent / polymer supported N-hydroxyphthalimide; Pd(PPh3)4 / tetrahydrofuran / 12 h / 35 °C View Scheme