The formation of amilides from aniline decreases the $+\mathrm{M}$ effect of aniline and $-\mathrm{NH}_{2}$ group is protected by acetyl group.
AMU-2014
AMINES
278822 Arrange the above compounds in the decreasing order of their basic strength.
1 $2>1>3$
2 $1>2>3$
3 $3>1>2$
4 $3>2>1$
Explanation:
Hence, the order is $-3>1>2$
SRMJEEE - 2013
AMINES
278826
Identify $A$ and $B$ in the following reactions
1
2
3
4
Explanation:
Chlorination in nitrobenzene is meta directing because in nitrobenzene deactivating group is present.
AP EAMCET (Engg.) - 2012
AMINES
278834
In the chemical reaction. compounds $A$ and $B$ respectively are
1 nitrobenzene and fluorobenzene
2 phenol and benzene
3 benzene diazonium chloride and fluorobenzene
4 nitrobenzene and chlorobenzene
Explanation:
Compound $\mathrm{A}$ is benzene diazonium chloride which react with $\mathrm{HBF}_{4}$ and gives fluorobenzene (B).
AIEEE 2010
AMINES
278839
The three carbanions follow which order of stability?
1 I $>$ II $>$ III
2 I $>$ III $>$ II
3 II $>$ I $>$ III
4 II $>$ III $>$ I
Explanation:
In o-nitro benzyl carbanion and p-nitro benzyl carbanion have -I and - R group but in o-nitrobenzyl carbanion has stronger - I effect. Hence the order is I $>$ III $>$ II
The formation of amilides from aniline decreases the $+\mathrm{M}$ effect of aniline and $-\mathrm{NH}_{2}$ group is protected by acetyl group.
AMU-2014
AMINES
278822 Arrange the above compounds in the decreasing order of their basic strength.
1 $2>1>3$
2 $1>2>3$
3 $3>1>2$
4 $3>2>1$
Explanation:
Hence, the order is $-3>1>2$
SRMJEEE - 2013
AMINES
278826
Identify $A$ and $B$ in the following reactions
1
2
3
4
Explanation:
Chlorination in nitrobenzene is meta directing because in nitrobenzene deactivating group is present.
AP EAMCET (Engg.) - 2012
AMINES
278834
In the chemical reaction. compounds $A$ and $B$ respectively are
1 nitrobenzene and fluorobenzene
2 phenol and benzene
3 benzene diazonium chloride and fluorobenzene
4 nitrobenzene and chlorobenzene
Explanation:
Compound $\mathrm{A}$ is benzene diazonium chloride which react with $\mathrm{HBF}_{4}$ and gives fluorobenzene (B).
AIEEE 2010
AMINES
278839
The three carbanions follow which order of stability?
1 I $>$ II $>$ III
2 I $>$ III $>$ II
3 II $>$ I $>$ III
4 II $>$ III $>$ I
Explanation:
In o-nitro benzyl carbanion and p-nitro benzyl carbanion have -I and - R group but in o-nitrobenzyl carbanion has stronger - I effect. Hence the order is I $>$ III $>$ II
The formation of amilides from aniline decreases the $+\mathrm{M}$ effect of aniline and $-\mathrm{NH}_{2}$ group is protected by acetyl group.
AMU-2014
AMINES
278822 Arrange the above compounds in the decreasing order of their basic strength.
1 $2>1>3$
2 $1>2>3$
3 $3>1>2$
4 $3>2>1$
Explanation:
Hence, the order is $-3>1>2$
SRMJEEE - 2013
AMINES
278826
Identify $A$ and $B$ in the following reactions
1
2
3
4
Explanation:
Chlorination in nitrobenzene is meta directing because in nitrobenzene deactivating group is present.
AP EAMCET (Engg.) - 2012
AMINES
278834
In the chemical reaction. compounds $A$ and $B$ respectively are
1 nitrobenzene and fluorobenzene
2 phenol and benzene
3 benzene diazonium chloride and fluorobenzene
4 nitrobenzene and chlorobenzene
Explanation:
Compound $\mathrm{A}$ is benzene diazonium chloride which react with $\mathrm{HBF}_{4}$ and gives fluorobenzene (B).
AIEEE 2010
AMINES
278839
The three carbanions follow which order of stability?
1 I $>$ II $>$ III
2 I $>$ III $>$ II
3 II $>$ I $>$ III
4 II $>$ III $>$ I
Explanation:
In o-nitro benzyl carbanion and p-nitro benzyl carbanion have -I and - R group but in o-nitrobenzyl carbanion has stronger - I effect. Hence the order is I $>$ III $>$ II
The formation of amilides from aniline decreases the $+\mathrm{M}$ effect of aniline and $-\mathrm{NH}_{2}$ group is protected by acetyl group.
AMU-2014
AMINES
278822 Arrange the above compounds in the decreasing order of their basic strength.
1 $2>1>3$
2 $1>2>3$
3 $3>1>2$
4 $3>2>1$
Explanation:
Hence, the order is $-3>1>2$
SRMJEEE - 2013
AMINES
278826
Identify $A$ and $B$ in the following reactions
1
2
3
4
Explanation:
Chlorination in nitrobenzene is meta directing because in nitrobenzene deactivating group is present.
AP EAMCET (Engg.) - 2012
AMINES
278834
In the chemical reaction. compounds $A$ and $B$ respectively are
1 nitrobenzene and fluorobenzene
2 phenol and benzene
3 benzene diazonium chloride and fluorobenzene
4 nitrobenzene and chlorobenzene
Explanation:
Compound $\mathrm{A}$ is benzene diazonium chloride which react with $\mathrm{HBF}_{4}$ and gives fluorobenzene (B).
AIEEE 2010
AMINES
278839
The three carbanions follow which order of stability?
1 I $>$ II $>$ III
2 I $>$ III $>$ II
3 II $>$ I $>$ III
4 II $>$ III $>$ I
Explanation:
In o-nitro benzyl carbanion and p-nitro benzyl carbanion have -I and - R group but in o-nitrobenzyl carbanion has stronger - I effect. Hence the order is I $>$ III $>$ II
The formation of amilides from aniline decreases the $+\mathrm{M}$ effect of aniline and $-\mathrm{NH}_{2}$ group is protected by acetyl group.
AMU-2014
AMINES
278822 Arrange the above compounds in the decreasing order of their basic strength.
1 $2>1>3$
2 $1>2>3$
3 $3>1>2$
4 $3>2>1$
Explanation:
Hence, the order is $-3>1>2$
SRMJEEE - 2013
AMINES
278826
Identify $A$ and $B$ in the following reactions
1
2
3
4
Explanation:
Chlorination in nitrobenzene is meta directing because in nitrobenzene deactivating group is present.
AP EAMCET (Engg.) - 2012
AMINES
278834
In the chemical reaction. compounds $A$ and $B$ respectively are
1 nitrobenzene and fluorobenzene
2 phenol and benzene
3 benzene diazonium chloride and fluorobenzene
4 nitrobenzene and chlorobenzene
Explanation:
Compound $\mathrm{A}$ is benzene diazonium chloride which react with $\mathrm{HBF}_{4}$ and gives fluorobenzene (B).
AIEEE 2010
AMINES
278839
The three carbanions follow which order of stability?
1 I $>$ II $>$ III
2 I $>$ III $>$ II
3 II $>$ I $>$ III
4 II $>$ III $>$ I
Explanation:
In o-nitro benzyl carbanion and p-nitro benzyl carbanion have -I and - R group but in o-nitrobenzyl carbanion has stronger - I effect. Hence the order is I $>$ III $>$ II
