Aromatic Chemistry

Question 0

What mechanism does benzene undergo?

Answer 0

Electrophilic substitution

Question 1

Why is benzene more more stable than the theoretical cyclohexa-1,3,5-triene?

Answer 1

Because in benzene there is a ring of delocalised electrons in the overlapping p orbitals in the centre of the molecule.

Question 2

What is the equation for the generation of the electrophile for nitration

Answer 2

H2SO4 + HNO3 -> H2NO3^+ + H2SO4^-

H2NO3^+ -> NO2^+ + H2O

Question 3

What is the equation for the electrophile used in friedel-crafts acylation of benzene?

Answer 3

RCOCL + AlCl3 -> RCO^+ + AlCl4^-

AlCl4^- + H^+ -> AlCl3 + HCl