Organic II - Ether, Epoxides and Thioethers Flashcards
Give formula for an ether.
R-O-R’
Are ethers symmetrical or unsymmetrical?
Both.
What is the structure and polarity of ethers? (hybridization, molecular geometry, angle and polarity)
O is sp3 hybridized, bent molecular geometry, C-O-C 110 degrees and polar C-O bond
Boiling point of ethers are similar to _______.
alkanes
Can ethers hydrogen bond with other molecules?
No
Ethers have a lower b.p than ________.
alcohols
Ether molecules can H bond with ______ & ________ molecules.
water; alcohol
Why are ethers used as solvents?
They can dissolve n.p and polar substances and are unreactive with strong bases.
-OCH3 is named as…
methoxy
Give the epoxide formula.
CH2-O-CH2
Define heterocyclic.
O is part of the ring
Oxetane is…
O + 3 C ring (forms a square)
Dioxane is…
2 O + 4 C (hexagon)
Furan is…
O + 4 C with 2 double bonds (dicyclopentene)
Pyran is…
O + 5 C with 2 double bonds (dicyclohexene)
Name all the heterocycles.
epoxide, oxetane, furan, pyran, dioxane
Another name for oxirane is…
1,2-epoxyethane
What method does the preparation of ether use?
Williamson ether synthesis