aluminum amalgam in tetrahydrofuran; water

Multi-step reaction with 3 steps 1: pyridine2: NaIO4 / methanol; H2O3: 1.) LDA; 2.) glacial acetic acid / 1.) THF, -78 to RT, 10 h; 2.) THF, RT, 1 h  

With  acetic acid; lithium diisopropyl amide  1.) THF, -78 to RT, 10 h; 2.) THF, RT, 1 h;  Yield given. Multistep reaction;