lithium aluminium tetrahydride in tetrahydrofuran T=0 - 18°C; 15 h;

1: 89 percent / DMTMM / tetrahydrofuran / 15 h / 18 °C 2: 99 percent / lithium aluminium hydride / tetrahydrofuran / 15 h / 0 - 18 °C View Scheme

1: 89 percent / DMTMM / tetrahydrofuran / 15 h / 18 °C 2: 99 percent / lithium aluminium hydride / tetrahydrofuran / 15 h / 0 - 18 °C View Scheme

n-butyllithium; tert.-butyl lithium; zinc dibromide 1.) ether, hexane, pentane, -50 -> -20 deg C, 2.) ether, hexane, pentane, -60 deg C -> room temperature; Yield given. Multistep reaction;