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Why does the (E,E)-isomer of 2,4-hexadiene react much more rapidly with dienophiles than does the (Z,Z)-isomer?
Q9: Which statement best explains why a carbonyl
Q22: Draw the HOMO of 1,3-butadiene.
Q36: Why does the (E,E)-isomer of 2,4-hexadiene react
Q41: By which single reaction can benzene be
Q47: Which of the following compounds is the
Q50: In addition to a carbonyl stretch, which
Q61: Rank the following compounds in order of
Q103: Provide the major organic product in the
Q105: When cycloheptatriene is deprotonated, an anion with
Q125: What diene and dienophile would react to