Naming cycloalkanes with 2/+ substituents?

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Naming cycloalkanes with 2/+ substituents?

Postby Abigail_Low_1A » Thu Mar 02, 2017 12:14 pm

In the textbook it says "when the structure has more than two substituents, the lowest numbering on the first occurrence of a substituent gives the correct IUPAC name." Do you alphabetize the substituents first and then decide on how to number the structure?

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Re: Naming cycloalkanes with 2/+ substituents?

Postby breinhardt3G » Thu Mar 02, 2017 12:32 pm

No, you indicate which carbon should be your primary carbon based on the order in which you can achieve the lowest number associated with each substituent. If you look at the example, you can see that the correct numbering is the one in which the substituents have the lowest carbon number, not which ones come first in the alphabet.

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