lithium aluminium tetrahydride in tetrahydrofuran 2 h;

1: 1.) n-butyllithium / 1.) ether, hexane, -30 - -20 deg C, 30 min, 2.) 1 h 2: 72 percent / lithium aluminum hydride / tetrahydrofuran / 2 h View Scheme

1: 1.) n-butyllithium / 1.) ether, hexane, -30 - -20 deg C, 30 min, 2.) 1 h 2: 72 percent / lithium aluminum hydride / tetrahydrofuran / 2 h View Scheme