October 2004
Intermediate to advanced
527 pages
13h 50m
English
Content preview from Advanced Organic ChemistryBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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12
Aromaticity
LEARNING OBJECTIVES
By the end of this chapter you should be familiar with
- The concept of aromaticity, non-aromaticity, anti-aromaticity and homoaromaticity.
- The annulenes and their aromatic character.
- Aromaticity in charged rings, fused ring systems and heterocyclic rings.
12.1 INTRODUCTION
Organic compounds have been classified on the basis of their structure. Open-chain structures containing carbon–carbon single (C–C), double (C=C) and triple bonds are said to be aliphatic compounds. The term ‘aliphatic’ is derived from the Greek word for fat or oil. In alicyclic molecules, the carbon atoms form a cyclic structure. The generic name aromatic was given originally to a structurally diverse collection of compounds, which had one ...
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