Chem 336 - Spring 1999 - Organic Chemistry III
Portland State University - Dr. Carl C. Wamser

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Chapter 22 Pre-Quiz

(1 point each)

1. The compound below that would be considered a conjugated diene is

a) 1,2-hexadiene

b) 1,3-hexadiene

c) 1,4-hexadiene

d) 1,5-hexadiene

2. A dienophile is most commonly

a) an electron-rich diene

b) an electron-deficient diene

c) an electron-rich alkene

d) an electron-deficient alkene

3. 1,4-Addition of HBr to a conjugated diene results in

a) a saturated alkyl bromide

b) an allylic bromide

c) a vinylic bromide

d) none of the above

4. A diene that could undergo the Cope rearrangement is

a) 1,2-hexadiene

b) 1,3-hexadiene

c) 1,4-hexadiene

d) 1,5-hexadiene

5. A pericyclic transition state will be especially stable if it contains

a) electron-pushing arrows

b) cis double bonds

c) (4n+2) electrons

d) thermodynamic control