Metal oxo reagents (like OsO4) are well-known to give syn dihydroxylation in their products (1). This is in contrast to use of a peroxy acid reagent (like mCPBA), which when added with strong acid in the 2nd step, gives anti looking dihydroxylation products (II). Draw a detailed, electron-pushing mechanism that shows the formation of the anti looking products using the AE then SN2 mechanistic pathway. OH I " H3C H3C CH3 CH3 OSO4 НОН 1. MCPBA 2. Н30 H3C H3C OH ОН OH OH CH3 H3C CH3 + H3C OH ОН ОН CH3 CH3

after you write the five reacitons pathways, label the rate-determining step and mechanism please

V. In the following reaction: CH3CH₂Br + CH3COOK → CH3COOCH₂CH3 +KBr Adding a small amount of sodium iodide increases the reaction rate significantly. Please using the reaction mechanisms, nucleophilicity and leaving group quality to explain.

Provide the complete mechanism using curved arrow formalism for the reaction of pyruvic acid treated with the compound shown below>