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Chapter 17 565
Copyright © 2017 Pearson Education, Inc.
26.
O OH
HO
O OH
OH
H
+
27.
H
HO
−
−
C C
O O
C C
OH
HO
−
C
6
H
5
C
6
H
5
C
6
H
5
O
H
2
O
+
H
2
O
+
OH
C
6
H
5
C
6
H
5
O
C
6
H
5
C
6
H
5
C
6
H
5
O
−
C
6
H
5
C
6
H
5
O
C
6
H
5
C
6
H
5
HO
H
−
−
H
OH
−
O
C
O
C
C C
H
O O
O
O
C
O
C
C C
O
O
C
C C
−
O
O
C
OEt
H
EtO
28.
CH OCH
3
CH
2
CH
3
CH
3
CH
2
CH
2
a.
CH OCH
2
CH
3
CHCH
3
CH
3
CH
3
CHCH
2
CH
3
b.
C
O
C
O
C
O
C
O
29.
A
,
B
, and
D
cannot undergo a Claisen condensation.
A
cannot, because a proton cannot be removed from an
sp
2
carbon.
B
and
D
cannot, because they do not have an
a
-hydrogen.