1. Cyclic Hydrocarbons
The two ends of the carbon chain are attached in a ring
named as “cyclo- ____”
hydrocarbon compounds that do NOT contain rings are known as aliphatic compounds

2. Cycloalkanes Cyclopropane CH2 CH2 CH2 Cyclobutane CH2 CH2
The is a group of alkanes that have a cyclic structure. These cycloalkanes contain a carbon chain that is in a ring. Each cycloalkane has a formula that is 2C less than the corresponding alkane. For example, propane is C3H8 whereas cyclopropane ic C3H6. Butane is C4H10 and cyclobutane is C4H10. The names of the cyclic structures use the prefix cyclo in from of the alkane name for the carbon chain.

3. More Cycloalkanes
Cyclopentane CH2
CH CH2
CH CH2
Cyclohexane
CH2

4. Naming Cycloalkanes with Side Groups
Number of Naming
side groups
One Side group name goes in front of the cycloalkane name.
Two Number the ring in the direction that gives the lowest numbers to the side groups.

5. Cycloalkanes with Side Groups

6. Learning Check

7. Solution