Name cyclic alkanes and haloalkanes

Introduction:

The IUPAC rules for naming rings is similar to that for linear alkanes and haloalkanes (see previous topic).

How to:

The following rules must be followed in order.

1) The ring will be the parent chain (even if there is a longer linear chain attached to the ring).  The ring is named by the number of carbons (as before) but with the prefix cyclo-.

            i.e.    cyclohexane (six-carbon ring) or cyclooctane (eight-carbon ring)

2) Number the ring starting from the carbon that will give the lowest substituent numbers.  In the case of a tie, start with the carbon with the substituent name that is earliest in the alphabet.  Number in the direction that give the lower overall substituent numbers.  (In more complex situations go in the direction that is alphabetical).           

3) Name any groups (substituents) attached to the parent ring.

            –carbon substituents are named methyl, ethyl, propyl etc.

            –halogen substituents are named fluoro, chloro, bromo etc.

4) Groups the substituents that repeat together using prefixes: di-, tri-, tetra- etc.

5) List the substituents in alphabetical order ignoring the prefixes.

            i.e.    ethyl before methyl

                     ethyl before dimethyl 

6) Write out the name in the format:

            #,#-prefixsubstituent-#-prefixsubstituentparentchain

Examples: