lithium aluminium tetrahydride

1: 88 percent / LiAlH4 2: 88 percent 3: LiBr / dimethylsulfoxide / Heating 4: LDA 5: 95 percent / H2 / Lindlar's catalyst 6: Bu3SnH, AIBN / benzene / Heating; other gem-diethoxy-substituted unsaturated esters View Scheme