1. 3.15 Ethers Contain an -O- between two carbon groups
Simple ethers named from -yl names of the attached groups and adding ether.
CH3-O-CH3
CH3-O-CH2CH3

2. 3.16 Nomenclature of Ethers
Common names
CH3-O-CH3 dimethyl ether
CH3-O-CH2CH3 ethyl methyl ether
CH3-O-CH2CH3 methoxyethane

3. 3.16 Nomenclature of Ethers
IUPAC NAMES
CH3-O-CH3 methoxymethane
CH3-O-CH2CH3 methoxyethane
Anisole---an aromatic ether

4. Ethers as Anesthetics Anesthetics inhibit pain signals to the brain
CH3CH2-O-CH2CH3 used for over a century (Morton, 1846)
Causes nausea and is highly flammable
1960s developed nonflammable anesthetics
Cl F F Cl F H
H-C-C-O-C-H H-C-C-O-C-H
F F F H F H
Enflurane Penthrane

5. MTBE CH3 Methyl tert-butyl ether CH3-O-C-CH3
Second in production or organic chemicals
Additive to improve gasoline performance
Use in question with discovery of contaminated water supplies

6. 3.17 Isomerism in Ethers
Ethers and alcohols are constitutional isomers
Cyclic ethers (3.19) and unsaturated ethers

7. 3.18 Physical and Chemical Properties of Ethers
Non-polar
Combustible
Peroxide formers
R–O–CH(CH3)2   +   O2
              
R–O–C(CH3)2–O–O–H   a peroxide

8. 3.19 Cyclic ethers Furan Tetrahydrofuran Pyran Tetrahydropyran
Chp 3.15 to 3.19
3.19 Cyclic ethers
Furan
Tetrahydrofuran
Pyran
Tetrahydropyran