Arrange the following aryl halides in decreasing order of reactivity towards electrophilic aromatic substitution:
I. Bromobenzene
II. 4-Bromonitrobenzene
III. 2,4-Dibromobenzene
IV. 4-Bromoaniline
I > II > III > IV
IV > I > III > II
II > III > I > IV
IV > III > I > II
Related Questions
Which of the following aryl halides undergoes nucleophilic aromatic substitution with aqueous NaOH at room temperature most readily?
Chlorobenzene
4-Nitrochlorobenzene
2,4-Dinitrochlorobenzene
2,4,6-Trinitrochlorobenzene
The major product of the reaction of bromobenzene with magnesium in dry ether followed by reaction with CO2 and then acidic hydrolysis is:
Phenol
Toluene
Benzoic acid
Bromophenol
The C-X bond in aryl halides is:
Weaker than in alkyl halides
Stronger than in alkyl halides
The same strength as in alkyl halides
Non-existent
Predict the major product formed when 2-bromotoluene reacts with NaNH2 in liquid ammonia followed by treatment with CH3I.
N-methyl-2-methylaniline
N-methyl-3-methylaniline
2-methylaniline
3-methylaniline
reactions are favoured in which solvent
DMSO
DMF
acetone
Which of the following aryl halides is most reactive towards nucleophilic substitution via the SN1 mechanism?
C6H5Cl
C6H5CH2Cl
(C6H5)2CHCl
(C6H5)3CCl
Predict the major product of the reaction of 1-bromo-4-nitrobenzene with potassium tert-butoxide in tert-butanol.
4-tert-butoxy-1-nitrobenzene
2-tert-butoxy-1-nitrobenzene
1-bromo-4-tert-butoxybenzene
No reaction
Which halogen is commonly present in aryl halides?
Oxygen
Chlorine
Nitrogen
Sulfur
What is the major product when chlorobenzene reacts with sodium metal in the presence of dry ether (Wurtz-Fittig reaction)?
Benzene
Toluene
Biphenyl
Diphenylmethane
Which of the following reactions is NOT typical for aryl halides?
Electrophilic aromatic substitution
Wurtz-Fittig reaction
SN2 substitution with aqueous NaOH
Formation of Grignard reagent
