Organic Chemistry II
	Professor Carl C. Wamser
Chem 335 - Winter 2009	Pre-Quiz 12

(must be done in Blackboard before Fri., Jan. 16, 8:30 am)

1. The arenium ion intermediate in the electrophilic substitution of benzene has how many resonance forms?

a. 1
b. 2
* c. 3
d. 4
e. 5

2. The electrophile in a Friedel-Crafts alkylation is a

a. free radical
* b. carbocation
c. carbanion
d. oxonium ion
e. proton

3. The typical product of a Clemmensen reduction is an

a. alcohol
b. alkyl halide
c. alkene
d. alkyne
* e. alkane

4. The most activating substituent in the list below is

a. methyl
b. tert-butyl
* c. hydroxy
d. phenyl
e. nitro

5. The order of reactivity in electrophilic aromatic substitution is

a. benzene > toluene > pyridine
b. benzene > pyridine > toluene
c. toluene > pyridine > benzene
* d. toluene > benzene > pyridine
e. pyridine > toluene > benzene
f. pyridine > benzene > toluene