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162 Chapter 4
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7.
a.
H
C
CH
3
CH
2
C
H
CH
3
Z
H
C
CH
3
CH
2
C
CH
3
H
E
b.
Cl
C
CH
3
CH
2
C
H
CH
2
CH
3
E
C
CH
3
CH
2
C
CH
2
CH
3
H
Z
Cl
c.
CH
3
CH
2
CH
2
CH
2
CH
3
CH
2
CH
2
CH
2
C C
CH
2
Cl
CHCH
3
CH
3
CH
2
CH
3
Z
C C
CHCH
3
CH
2
Cl
CH
3
CH
2
E
CH
3
d.
C
C
H
C C
HOCH
2
CH
2
HOCH
2
CH
2
C(CH
3
)
3
C
H
Z
C C
C
C(CH
3
)
3
E
CH
CH
O
O
8.
a.
-
I
7 -
Br
7 -
OH
7 -
CH
3
b.
-
OH
7 -
CH
2
Cl
7 -
CH
“
CH
2
7 -
CH
2
CH
2
OH
9.
The high-priority groups are on same side of the double bond, so tamoxifen has the
Z
configuration.
O
N
C C
high priority
high priority