Download Ethers

Ethers
Sunny Huang
Jason Mai
Cindy Liang
Michelle Lee
Aim
• What are ethers
and their
significance?
Instructional
Objectives
• Name ethers
• Identify molecules
with an ether
functional group
• Become familiar
with the uses of
ether
Do Now
•
•
•
•
Name the compounds
CH4
C2H6
C3H8
Nomenclature
• To name an ether, identify the longest chain of carbon
atoms. The longest chain that contains an oxygen are
alkyl groups, which are alkoxy groups.
• Example: CH3–CH2ethyl CH3–CH2–O ethyloxy
Common Name
• Ethers can be named by naming the carbon groups as a
separate word and ending it with the word ether.
• They are named by the alkyl groups bonded to each
other.
• CH3–CH2–CH–O–CH3
• Butyl Methyl Ether
• To name in IUPAC nomenclature:
• Find the longest chain of carbon.
• Use prefixes to number the carbons connected to oxygen
to the lower number of carbons.
• Name the substituent group OR as alkoxy.
Examples
•
•
•
•
•
CH3-O-CH3
CH3CH2-O-CH2CH3
CH3-O-CH2-CH2-CH3
Draw 2-butoxybutane
Draw 4-butoxymethane
Properties of Ethers
• Medium melting point: Polar molecules have a medium melting
point, with ionic being the highest and nonpolar the lowest
• Medium boiling point: Intermolecular forces are weaker than
hydrogen but stronger than London forces
• Soluble in water: The oxygen it contains forms a polar covalent
bond with the carbon and allows it to dissolve in water
• Polarity: Polar covalent between carbons and oxygen
• Intermolecular bonds: Dipole-Dipole
Uses
• CH3–CH2–CH–O–CH3
• Methyloxybutane
• Uses
• Solvent for organic compounds such as alkaloids,
oils, fats.
• Anesthetic agent while doing surgeries.
• Refrigerant
• Fuel
Homework
• Page 287 do 9.23
• Page 288 do 9.35 a-d
Bibliography
• http://chemistry.boisestate.edu/people/richar
dbanks/organic/nomenclature/ethernomencla
ture1.htm
• http://www.tutorvista.com/chemistry/usesof-ether