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When dealing with organic II trying to provide mechanisms for the following synthesis any explanation especially with the electron movement would be greatly appreciated

69. Provide Mechanisms for the Following Transformations. (3 points each) (Note: in someof these mechanisms, either the reactant or the product may not be a "final product" or an"isolable chemical". But you should still be able to write the mechanisms.)1. LDA (LiNR2)Ph2.a.BrPhNaOCH3OHPhCH3OH Phb.OH OH+OHHOH H2OC.OHiNaOMeOOPhOCH3MeOHPhOCH3d.PhOCH3 H*OHOH20+ CH3OH(Note: This process iscentral to the metabolismof carbohydrates)C.OH+Hf.NMe2H,O