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Naming Organic Compounds. If you don’t know how to name organic compounds, they will really knock you down on the test !. IUPAC System. International Union of Pure and Applied Chemistry System used to name organic compounds . Naming Hydrocarbons:. *Table P  prefix *Table Q  suffix

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naming organic compounds

Naming Organic Compounds

If you don’t know how to name organic compounds, they will really knock you down on the test!

iupac system
IUPAC System

International Union of Pure and Applied Chemistry

System used to name organic compounds

naming hydrocarbons
Naming Hydrocarbons:

*Table P  prefix

*Table Q  suffix

* numbers are used when there are isomers

1-butene

2-butene

How else could we write 1-butene?

for more than one alkyl group
*For more than one alkyl group:
  • 2 – di
  • 3 – tri
  • 4 - tetra

2,3-dimethylbutane

2,2-dimethylbutane

2,2-dimethylbutane

slide5

CH3

  • Find the longest Carbon chain
  • Number from the shortest end

C – C – C – C – C – C

3-methyl hexane

C – C – C – C – C –

2-methyl pentane

CH3

slide6

CH3

CH3

C – C – C – C – C –

2,3-dimethyl pentane

3-ethyl hexane

C – C – C – C – C –

C

C

C

slide7

– C – C – C – C –

2-methyl butane

2,3-dimethyl pentane

C

C

C – C – C – C – C –

C

slide8

3-methyl hexane

C – C – C – C – C –

C

C

slide9

Alkenes:

  • Find the longest chain with the double bond
  • Number to make double bond smallest possible
  • End in “ene”

4-methyl-1-pentene

1 2 3 4 5

draw molecular structures
Draw molecular structures:

*start with the right part of the name and go left

2-pentyne

2,3-dimethyl hexane

learning check
Learning Check:
  • Draw the molecular structure for:

4-ethyl-2,3,4-trimethyl octane