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Chapter 6 239
Copyright © 2017 Pearson Education, Inc.
101
.
a.
A proton adds to the alkene, forming a secondary carbocation, which undergoes a ring-expansion rear-
rangement to form a more stable tertiary carbocation.
CH H
3
C
CH
2
CHCH
3
H
3
C
H OSO
3
H
+
+
CH
3
CH
3
CH
3
H
HO CH
3
H
2
O
H
2
O
+
CH
3
CH
3
HO
+ H
3
O
+
102
.
103
.
a.
b.