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Chapter 3: Conformations
of Alkanes and Cycloalkanes
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Heterocycles
Of course atoms other than C
can occur as part of the cyclic structure. Such atoms, which are known as heteroatoms,
e.g. N, O, S give rise to heterocycles. These heterocycles
are, in general, very similar to the analogous hydrocarbons, check out the Chime
images of a few common simple heterocylces and a few more complex natural heterocycles
shown below.
Tetrahydrofuran
(THF)
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Pyrrolidine
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![](pyrrolidine.gif) |
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Piperidine
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![](piperidine.gif) |
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Morpholine
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![](morpholine.gif) |
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![](ucarms2.gif) |
© Dr. Ian Hunt, Department of Chemistry, University
of Calgary |
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