chlorination of benzene Flashcards
1
Q
how is the electrophile generated
A
Cl2 + AlCl3 ⇌ AlCl4 - + Cl+
2
Q
why does this reaction occur:
Cl2 + AlCl3 ⇌ AlCl4 - + Cl+
A
anhydrous aluminium chloride acts as a catalyst
AlCl3 has 6 electrons in its outer shell
this increases the polarisation of the Cl - Cl bond making the charge on Cl more positive causing the above reaction to occur
3
Q
what 3 compounds can be used as a halogen carrier
A
AlCl3
FeCl3
fE
4
Q
how is AlCl3 regenerated at the end of the reaction
A
AlCl4 - + H+ ⇌ HCl + AlCl3
