Ethers

-ROR

structure of Ether

-oxy

ending of ether’s iupac name

1. slightly polar due to C-O bond

2. Boiling point lower than alcohol (no hydrogen bonding b/w molecules)

3. highly volatile and flammable

4. pleasant odor

5. bond angle 110.3°

characteristics of ether

simple ethers

solvents

halogenated ethers

anesthetics

diethyl ether

example of an anesthetic ether

dimethyl ether

example of a propellant ether

halogenated ethers

ethers with fluorine/ chlorine atoms attached; designed to be safe, controllable inhalation anesthetics

isoflurane, desfluane, sevoflurane, enflurane

examples of halogenated ethers

isoflurane

stable and widely used halogenated ether

cyclic ether

Oxygen is one of the atoms in the ring of ether

tetrahydrofuran (THF)

a 5-membered ring

tetrahydropyran (THP)

a 6-membered ring

11°C

boiling point of ethylene oxide

78°C

boiling point of ethanol

-24°C

boiling point of dimethyl ether

epoxide

tetrahydrofuran

tetrahydropyran

how did furan and pyran became tetrahydrofuran and tetrahydropyran?

catalytic hydrogenation.(taking 4 hydrogens which breaks the double bonds)