Preparation of Haloarenes Flashcards
1
Q
From hydrocarbons by what
A
electrophilic substitution
2
Q
How are aryl halides formed by electrophilic substitution?
A
in the presence of a lewis acid catalyst like iron or iron chloride to form ortho and para halobenzenes.
3
Q
how to prevent the reversible nature of reactions with iodine?
A
using oxidising agents like HNO3 and HIO4 to oxidise HI during iodination.
4
Q
amine
A
-NH2
5
Q
sandmeyers reaction
A
aromatic amine in aqueous mineral acids is treated with NaNO2 and and HX to form a diazonium salt which is then treated with cuprous halide to form an aryl halide
6
Q
replacement of diazonium salt with iodine requires
A
potassium iodide
