Exam (elaborations)
ochem final Exam 2024/2025 test bank Questions With Completed & Verified Soluton.
ochem final Exam 2024/2025 test bank Questions With Completed & Verified Soluton.
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ochem final test bankB
Which of the following statements about radicals is true?
a. Cleavage of a stronger bond forms the more stable radical.
b. Less stable radicals generally do not rearrange to more stable radicals.
c. The higher the bond dissociation energy for a C-H bond, the more stable the resulting carbon
radical.
d. The stability of a radical increases as the number of alkyl groups bonded to the radical carbon
decreases
A- only II and IV
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I
only II and IV
I = Benzaldehyde; II = phenol; III = toluene.
, IV
I and II
I
C. Addition of the electrophile to the aromatic ring
B- the starting material is frequently over-alkylated
What is a major problem with Friedel-Crafts alkylation?
a. It requires high temperatures.
b. The starting material is frequently over-alkylated.
c. The products coordinate with the aluminum chloride.
d. The conditions are too acidic.
IV
c. Protonation occurs at the carbonyl oxygen because the resulting conjugate acid is stabilized
by resonance.
d. NaH
c. CH3COOH
B. LiAlH4 then H2O
B. The Grignard reagent will react with the alcohol before the ketone.
II
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