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What is the theoretical (minimum) number of equivalents of methylmagnesium iodide (CHMgI) needed for reaction with...

What is the theoretical (minimum) number of equivalents of methylmagnesium iodide (CHMgI) needed for reaction with benzoin? How many equivalents of CH3MgI did you use relative to benzoin and why is this number of equivalents necessary for the reaction?

In this experiment, we used 0.287g of magnesium turnings with 13mL of a 1.0M solution of methyl iodide (CH3I) in anhydrous diethyl ether to synthesize methylmagnesium iodide (CHMgI)

We then reacted methylmagnesium iodide (CHMgI) with 0.507g of a benzoin solution in 10mL of anhydrous CH2Cl2

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