aromatic chemistry Flashcards
1
Q
evidence to disprove the Kekule model
A
- benzene does not undergo electrophilic addition
- doesn’t decolourise with bromine water
- lengths of carbon- carbon bonds are all the same
- enthalpy change of hydrogenation is less exothermic than expected
- means its more stable
2
Q
draw ethylbenzene
A
page 435
3
Q
draw chlorobenzene
A
page 435
4
Q
draw nitrobenzene
A
page 435
5
Q
draw phenylethanone
A
page 435
6
Q
draw benzoic acid
A
page 435
7
Q
draw phenylamine
A
page 435
8
Q
draw benzaldehyde
A
page 435
9
Q
what is the characteristic mechanism of benzene
A
electrophilic substitution
10
Q
what sort of directing group is OH-
A
2,4- directing group (ortho- and para-)
11
Q
what sort of directing group is -NH₂
A
2,4- directing group (ortho- and para-)
12
Q
draw phenol
A
page 442
13
Q
what is another name for 3-bromonitrobenzene?
A
meta- bromonitrobenzene or m-bromonitrobenzene
14
Q
comparing the reactivity of phenol and benzene
A
- lone pair of electrons on OH which is partially delocalised
- electron density in the ring increases
- more susceptible to attack from electrophiles
15
Q
position 3 on benzene ring name
A
meta
