Organic Chemistry (8th Edition)

Published by Pearson
ISBN 10: 0321768418
ISBN 13: 978-0-32176-841-4

Chapter 7 - Structure and Synthesis of Alkenes - Problems - Page 319: Problem 7-27 (3)

Answer

The reactions $(b)$ and $(d)$ involve strong acids and strong electrophiles.

Work Step by Step

In reaction $(b)$, $H^+$ is a catalyst. In reaction $(d)$, the catalyst $BF_3$ is a strong Lewis acid. So, the reactions $(b)$ and $(d)$ involve strong acids and strong electrophiles.
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