Nitrocompounds
1) Why nitro group is called an ambient group?
2) Give a reaction to prepare nitroalkane from haloalkane and name the test used for the detection of nitro compound.
3) How is chloropicrin obtained from nitromethane? Give an important uses of nitroalkane.
4) How are the following conversion carried out: Nitroethane into N-ethylhydroxylamine?
5) How does nitroalkane react with:
Aromatic nitrocompounds
1.Starting from
nitrobenzene how would you obtain pricric acid?
2.How would you predict
that nitro group in nitrobenzene is an electro withdrawing group?
3.Why is halogenation of
nitrobenzene occurs in meta position?
4.Why does nitrobenzene
undergo electrophilic substitution at meta position?
5.What happens when Nitrobenzene is subjected to electrolytic reduction
i.Subjected to electrolytic reduction
ii.Treated with Zn/NaOH
6.7How are following
conversion carried out: Nitrobenzene to azobenzene
7.Convert nitrobenzene
into
i.p-aminophenol
ii.Hydrazobenzene
8.Electrophilic
substitution reaction occurs at meta position. Give reason.
9.Convert nitrobenzene in
p-aminoazobenzene
10.Why is –NO2 group a meta directing towards electrophilic aromatic
substitution?
11.Why does nitrobenzene
undergo electrophilic substitution at meta position?
12.What products would you
expect when Nitrobenzene is treated is treated with:
i.Zn/ NaOH
ii.Electrolytic reduction
13.Account for that fact –NO2 is a meta directing group towards electrophilic aromatic substitution.
1.How is pure nitrobenzene prepared in the laboratory? Perform the following conversions:
i.Nitrobenzene to p-hydroxybenzene
ii.Benzoic acid to p-aminoazobenzene
2.What happens when nitrobenzene is reduced in acidic, neutral, alkaline and electrolytic conditions.
3.Write the resonating structures of nitrobenzene ans explain why does it give meta substituted product during electrophilic substitution? How is nitrobenzene converted to p-hydroxyazobenzene?
4.Write the chemical equation with conditions for the following reactions:
i.Nitrobenzene is reduced in neutral medium
5.How is nitrobenzene prepared in laboratory?
6.Write the structure of organic compound A, B, C and D in the following sequence of reactions:
7.Describe laboratory method of preparation of pure and dry nitrobenzene. Identify the major products [A], [B], [C] and [D] in the following reaction sequence:
The compound [C] can be obtained by heating toluene in presence of CeO2/H+.
1.How is pure nitrobenzene prepared in the laboratory? Identify [A], [B], [C] and [D] in the following reaction sequence.
2.How is pure nitrobenzene prepared in the laboratory? Identify [A], [B] and [C] in the reaction sequence.
Give a chemical reaction for the preparation of nitrobenzene from benzene.
3.Starting from nitrobenzene how will you prepare:
i.Azobenzene
ii.Oxyazobenzene
iii.Hydrazobenene
iv.TNT
4.How is dry and pure nitrobenzene prepared in the laboratory? Identify A, B, C and D in the following reaction sequence:
Compound D when react with zinc amalgam in the presence of acid to give toluene.
5.How is pure nitrobenzene prepared in the laboratory?
Convert the following :
i.Aniline into azodye
ii.Benzaldehyde into cinnamic acid
6.Sketch a well-labelled diagram for the preparation of nitrobenzene in the laboratory.
7.How is pure nitrobenzene prepared in the laboratory
What happens when C is treated with aqueous bromine
8.How is pure and dry nitrobenzene prepared in laboratory?
Identify compounds A, B, C and D in the followings and write the reaction involved:
9.a.How is pure and dry nitrobenzene prepared in laboratory?
b.Consider the following reactions:
Identify compounds A, B, and C and write the reactions involved:
10.How is nitrobenzene prepared in laboratory in pure and dry state? How is it converted to p-hydroxyazobenzene?
11.Describe the preparation of pure and fry nitrobenzene in laboratory. How is it converted ti {i} phenol and (ii) hydrazobenzene?
12.Describe the laboratory method for the preparation of nitrobenzene. How is it purified?
13.What happens when nitrobenzene is subjected to reduction in
i.Acidic medium
iiNeutral medium?
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