Chemistry (4th Edition)

Published by McGraw-Hill Publishing Company
ISBN 10: 0078021529
ISBN 13: 978-0-07802-152-7

Chapter 25 - Section 25.2 - Classes of Organic Compounds - Checkpoint - Page 1076: 25.2.3


Option (b).

Work Step by Step

The longest chain of carbon with -CO- as a functional group is assigned, and gives it a base name. In the given structure, the longest carbon chain has five carbon atoms. So, the base name is pentanone. The number is assigned in a way that the -CO- functional group gets the lowest number. So, the -CO- functional group is situated at the second position. Therefore, the name of the compound is 2-pentanone .
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