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Unformatted text preview: 216 S06-E2 Page 2 Name ___________________________ I . (9 points) Answer in the boxes below the following questions for the Grignard reagent CH 3-MgBr. (1) (2 points) Is the carbon atom associated with magnesium electrophilic or nucleophilic? electrophilic nucleohpilic [circle one] (2) (3 points) Explain why the Grignard reaction has to be carried out in an anhydrous solvent. (3) (4 points) Write the conjugate carbon acid (i.e., C-H) of the CH 3 MgBr and explain why Grignard reagents are strong bases. structure: explanation: II . (6 points) Ethyl alcohol (C 2 H 5 OH) quite often is present in technical-grade diethyl ether. If this grade of diethyl ether were used, what effect, if any, would the ethyl alcohol have on a Grignard reagent used? Explain using a chemical equation using methylmagnesium bromide as an example. explanation based upon the reaction mechansim: III . (8 points) For each of the reactions below, draw in the boxes provided the structure of the ....
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