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 5 - Nomenclature - 5.6 Numbering - Problems - Page 101: 5.57



Work Step by Step

1. Find the parent chain and number the carbons: The parent chain will be everything but the ethyl and the methyl groups. The numbering will start from the left. 2. Functional group: - No group: "e" 3. Insaturations and number of carbons on the parent chain: - One double bond on the carbons 2 and 3: "2-en" - 8 carbons : "oct" 4. Substitutents: - 1 ethyl on carbon 4: "4-ethyl" - 1 methyl on carbon 5: "5-methyl" 5. Stereoisomerism: The double bond has 2 hydrogens in the trans shape. : (trans) 6. Put them all together: (trans)-4-ethyl-5-methyloct-2-ene.
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