Aromatic Organic Flashcards
1
Q
Why phenol is more reactive than benzene
A
- lone pair on oxygen is delocalised into pi ring system
- electron density of pi ring system increased
- more susceptible to attack from electrophiles
2
Q
Why phenylamine is a weak base
A
- Lone pair on NH3 delocalised into pi ring system
- electron density of pi ring system increased
- electrons aren’t available to attack other molecules
3
Q
Reformation of AlCl3
A
AlCl4 + H+ > AlCl3 + HCl
4
Q
Formation of acyl chloride electrophile
A
AlCl3 + ROCl > RCO+ + AlCl4-
5
Q
Sodium phenoxide > phenol
A
HCl
6
Q
Phenol + bromine equation
A
C6H5OH + 3Br2 > C6H3Br3 (2,4,6) + 3HBr
7
Q
Chlorobenzene > sodium phenoxide
A
NaOH, 350C
8
Q
Formation of nitronium ion
A
- H2SO4 + HNO3 > HSO4- + H2NO3+
- H2NO3+ > H2O + NO2+
9
Q
Nitrobenzene > Phenylamine
A
Sn, conc HCl, reflux
10
Q
Benzene > Nitrobenzene
A
conc HNO3, conc H2SO4, heat
11
Q
Formation of chlorine electrophile
A
Cl2 + AlCl3 > AlCl4- + Cl+
12
Q
Benzene > Chlorobenzene
A
Cl2, AlCl3 catalyst (E.S. / Chlorination)
13
Q
Benzene > Cyclohexane
A
H2, Ni catalyst (Reduction)
14
Q
Formation of bromine electrophile
A
Br2 + FeBr3 > Br+ + FeBr4-
15
Q
Benzene > Bromobenzene
A
Br2, FeBr3 X carrier (E.S. / bromination)
