Chapter 14 Ethers....

Question 0

Ethers have low boiling points due to a lacking of what intermolecular force

Answer 0

Hydrogen bonding

Question 1

Ethers have low reactivity making them good what?

Answer 1

Solvents

Question 2

Best at solvating what type of ion,

Answer 2

Cations

Question 3

Crown ethers are used to do what

Answer 3

Encapsulate cations

Question 4

Epoxides are

Answer 4

Three member ether rigs

Question 5

Four member ether rings

Answer 5

Oxetanes

Question 6

Five member ether rings are

Answer 6

Furanes

Question 7

Six member ether rings

Answer 7

Pyrane

Question 8

Williamson ether synthesis requires

Answer 8

Alkoxide and alkyl haylide

Question 9

Can phenols be used as alkoxide or alkyl halide in Williamson ether synth.

Answer 9

Alkoxides

Question 10

Why can’t phenols be used as alkyle halides in Williamson ether synth.

Answer 10

Hindrance from the ring structure doesn’t allow an SN2 attack by the alkoxide

Question 11

Alkoxy murcuration requires what to create an ether

Answer 11

Hg(OAc)2 …mercury TWO acetate

An alcohol ….. ( NOT H2O )

Question 12

Is Demucuration the same in ether synthesis as it is in alcohol synth?

What is needed

Answer 12

Yes.

Na BH4…. Sodium borohydride

Question 13

Ethers will react with strong hydrohalic acids in XS to give

Answer 13

Two alkyl halides

Question 14

In the cleavage of an ether with strong hydrohalic acids undergoes what reaction types

Answer 14

One SN2

One dehydration SN1

Question 15

Diphenyl ethers will not undergo what reaction with strong acids

Answer 15

Cleavage

Question 16

What is a protection group

Answer 16

Lone functional group used to protect a functional group from reactions

Question 17

Deprotection is used when

Answer 17

When the reaction is concluded or when the Protected needs modification

Question 18

Epoxidation synthesis reacts what two reactants

Answer 18

An alkene

MCPBA or proxy acid.

Question 19

Epoxides are hydrated to yield

Answer 19

Anti di-ols

Question 20

Epoxides can react with acid and H2O to create diols. What is the other way to use Epoxides to make diols

Answer 20

1) . Use a hydroxide to attack the least substituted carbon on the Epoxides.
2) protonate the hydroxide

Question 21

What type of reactions create Epoxides

Answer 21

Base promoted cyclist ion of halogens

Epoxidation of alkenes with. MCPBA or peroxy acid

Question 22

Base promoted cyclization reacts a strong base with what to produce an Epoxides

Answer 22

Anti configured alcohalide

Question 23

Gringards always attack what carbon on an Epoxides

Answer 23

Least substituted