9. Alkenes and Alkynes
Dehydration Reaction
Problem 7j
Textbook Question
Textbook QuestionThe following reaction is called the pinacol rearrangement. The reaction begins with an acid-promoted ionization to give a carbocation. This carbocation undergoes a methyl shift to give a more stable, resonance-stabilized cation. Loss of a proton gives the observed product. Propose a mechanism for the pinacol rearrangement. (CH3)2C(OH)C(CH3)2OH pinacol
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