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3. (4pts) Provide the structure of the unknown ketone/aldehyde starting material that would produce the following HNMR spectrum: 8 2H, Doublet 2H, Doublet 6

3. (4pts) Provide the structure of the unknown ketone/aldehyde starting material that would produce the following HNMR spectrum: 8 2H, Doublet 2H, Doublet 6 5 2H, Quartet 4 PPM 3 2H, Triplet 3H, Triplet 2H, Complex multiplet resembling a sextet 2 1 3H, Triplet 4. (4pts) Students are asked to "wash" their reaction solution, as well as, the organic extraction layers. What is/are the most likely impurities that are removed during these washing steps? Provide a balanced equation for the overall reaction to help answer this question below. Hint - track your boron:

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