Organic Chemistry As a Second Language, 3e: First Semester Topics

Published by John Wiley & Sons
ISBN 10: 111801040X
ISBN 13: 978-1-11801-040-2

Chapter 7 - Configurations - 7.3 Nomenclature - Problems - Page 148: 7.47



Work Step by Step

1. Name the compound by its substituents, parent, unsaturations and functional group: ** First identify the parental chain, and where you should start counting the carbons. - Substituent: 4-ethyl-2,3-dimethyl - Parent: hept - Unsaturations: 3-en - Functional group: e 2. Identify the double bonds and stereocenters. - Double bond - Carbon 3. 3. Identify their configurations: - The double bond on carbon 3: On the left: 1 Propyl (Top) and 1 Ethyl(Bottom). - (Top) gets priority. On the right: 1 Methyl (Top) and 1 Isopropyl(Bottom) - (Bottom) gets priority. Since different directions got priority, the configuration is: "E": (3E) 4. Put all the parts together: (3E)-4-ethyl-2,3-dimethylhept-3-ene
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