Naming AlkanesNaming AlkanesYou have just learned to name alkanes. To review the You have just learned to name alkanes. To review the

steps- steps- 1. Find the longest continuous chain of carbon atoms. This longest chain

may not be written in a straight line.

2. Name that longest chain with the appropriate alkane name.

3. Find the substituents and name each of them with the appropriate group name.

4. Number the carbons in the chain such that the lowest number is given to the group nearest one end of the chain.

5. List the groups alphabetically in front of the longest chain name.Precede each group name with a prefix indicating how many of them are present Precede each group name with a prefix indicating how many of them are present

in the molecule. In front of the prefix, list the numbers of each group in the in the molecule. In front of the prefix, list the numbers of each group in the molecule and separate the numbers with a hyphen.molecule and separate the numbers with a hyphen.

You will practice using the WHITEBOARDS

If I show you a structural formulaNAME IT!

If I give you a Name- DRAW IT!

Ready Set…

2,4-dimethylheptane

1 2 3 4 5 6 7

2,2,3-trimethylbutane

4-ethylheptane

1

2

7

6

3 4 5

4-ethyl-2,3,3,4-tetramethyloctane

3-ethyl-3,4,4,-trimethylheptane

4-ethyl-4,5-dipropyloctane

4-ethyl-2,2,3-tripropyloctane

4,4-diethyl-2,3-dimethylheptane

4-ethyl-2,3,4-trimethylheptane

3-ethyl-3-methyl-4,5-dipropyloctane

3,4-diethyl-5-methyl-5-propyloctane

2,3-diethylheptane

O.K.- Let’s Draw Structural formulas

3-methyl hexane

4,5,6-trimethyl-5-ethyldecane

2,2,3-trimethylpentane

3-ethylpentane

3-ethyl-3-propylhexane

2,3-dimethyl-3-ethylhexane

3-methyl-4,5,6-triethylnonane

4,6,6-triethyl5-methyl-5-propylnonane

2-ethyl-3,3-dimethylpentane

Last but not least-2,3,4-triethyl-3-propylheptane