Organic Chemistry II
	Professor Carl C. Wamser
Chem 335 - Winter Term	Pre-Quiz 10

(must be done in D2L before Wed., Jan. 11, 8:30 am)

1. How many allylic hydrogens are in 1-methylcyclopentene?

a) 0

b) 2

c) 3

d) 4

* e) 7

2. The bond between C2 and C3 in trans-1,3-pentadiene is between carbons of what hybridizations?

a) sp3 - sp3

b) sp3 - sp2

* c) sp2 - sp2

d) sp3 - sp

e) sp2 - sp

f) sp - sp

3. Conjugate (1,4) addition of HBr to 1,3-cyclopentadiene will give

a) 1-bromocyclopentene

b) 2-bromocyclopentene

* c) 3-bromocyclopentene

d) 1,3-dibromocyclopentene

e) 1,4-dibromocyclopentene

4. 1,2 addition of HBr to 1,3-cyclopentadiene will give

a) 1-bromocyclopentene

b) 2-bromocyclopentene

* c) 3-bromocyclopentene

d) 1,3-dibromocyclopentene

e) 1,4-dibromocyclopentene

5. A Diels-Alder reaction can be used to prepare 1,4-cyclohexadiene, in which 1,3-butadiene reacts with what dienophile?

a) ethene

* b) ethyne

c) cyclohexene

d) benzene