Organic Chemistry (8th Edition)

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

Chapter 6 - Alkyl Halides: Nucleophilic Substitution and Elimination - Study Problems - Page 280: 6-44 b

Answer

1-iodobutane reacts faster in SN2.

Work Step by Step

Iodide ion is a better leaving group than Cl- because the negative charge of iodide ion is distributed over a larger area, which stabilizes the charge better.
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