Chem 335 - Winter 2002
Organic Chemistry II
Dr. Carl C. Wamser
In order to do this pre-quiz, you must log in to the class WebCT site.
This pre-quiz must be submitted via WebCT before Friday morning, February 8, 8:30 am.
1. The intermediate in electrophilic aromatic substitution is a cyclohexadienyl cation with how many resonance forms?
1) 1
2) 2
* 3) 3
4) 4
5) 5
2. Compared to benzene, electrophilic aromatic substitution on toluene is
* 1) faster
2) slower
3) equal in rate
3. Nitration is a reaction that incorporates what substituent onto an aromatic ring?
1) NO
* 2) NO2
3) NO3
4) NO3H
5) none of the above
4. In a Friedel-Crafts reaction, the aromatic ring is attacked by
* 1) a carbocation
2) a positive halogen
3) a proton
4) aluminum chloride
5) a pi bond
5. Electrophilic substitution on phenol occurs primarily at which position(s)?
1) ortho
2) meta
* 3) para
* 4) ortho & para
5) meta & para