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On page 96 of the course reader, the first diagram was labeled to be isopropyl-cyclopentane. why cant it just be named propyl cyclopentane? what determines the prefixes of iso(or neo) to be added-- is it just the shape of the substituent chain?
The actual formula is associated with the prefix iso and neo. For iso it is (CH3)2CH and for neo it is (CH3)3C. For both, I believe it requires that there be at least 5 carbons in order to use. If this criteria is not met, then use systematic naming.
The prefixes "iso" and "neo" refer to the structural arrangement of the substituent bonded to the carbon atoms. I think to determine whether we need to include them in the names we just need to be familiar what each is. Iso is attached at one end and branches at the other, similar to a Y shape. Neo is used when there are 5 or more carbons bonded on the subsistent.
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