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Engineering
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The increasing order of nitration of the following compounds is :

  • Option 1)

    (b) < (a) <  (c) < (d)

  • Option 2)

    (a) < (b) <  (c) < (d)

  • Option 3)

    (b) < (a) < (d) < (c) 

  • Option 4)

    (a) < (b) < (d) < (c) 

 
As we learnt in  Gabriel Phthalimide Synthesis - Further alkylation can be stopped and a pure primary amine can be obtained by alkylation of phthalimide ( Gabriel synthesis ) followed by hydrolysis. - wherein     Here the aniline is least reactive due to formation of anilinium ion in acidic medium.    Option 1) (b) < (a) <  (c) < (d) Option 2) (a) < (b) <  (c) < (d) Option 3) (b) < (a) <...
Engineering
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The increasing order of basicity of the following compounds is:

(a)                  (b)

(c)                                    (d)

  • Option 1)

    (d) < (b) < (a) < (c)

  • Option 2)

    (a) < (b) < (c) < (d)

  • Option 3)

    (b) < (a) < (c) < (d)

  • Option 4)

    (b) < (a) < (d) < (c)

 

As we learned

 

Comparision of Basic nature in aliphatic amines in gaseous phase -

The +I effect of the alkyl group, which increase the electron density on N atom, facilitates the nitrogen atom to use its unshared pair of electrons for bond formation. Thus R - NH2 is expected to be more basic than NH3. Going by the same arguments the basic strength of amines is expected to increase with the increase in the number of alkyl groups attached to the nitrogen atom.

- wherein

R_{3}N>R_{2}NH>RNH_{2}>NH_{3}

 

 

 

b< a< d< c

(b) –lone pair present on sp^{2} hybridized nitrogen

(a)-I  of sp^{2} hybridized carbon

(d) +3 of two alkyl group

(c) Guanidine derivative


Option 1)

(d) < (b) < (a) < (c)

Option 2)

(a) < (b) < (c) < (d)

Option 3)

(b) < (a) < (c) < (d)

Option 4)

(b) < (a) < (d) < (c)

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Engineering
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The increasing order of diazotisation of the
following compounds is :

  • Option 1)

    (a) < (b) < (c) < (d)

  • Option 2)

    (a) < (d) < (b) < (c)

  • Option 3)

    (a) < (d) < (c) < (b)

  • Option 4)

    (d) < (c) < (b) < (a)

 
As we have learnt,   Fate of aliphatic diazonium ion - The diazonium ions of aliphatic amines are very unstable and produces carbocation immediately, which can produce different products.  - wherein     Fate of aromatic diazonium ion - Diazonium salts of aromatic amines are comparatively more stable and evolve nitrogen only on heating.These diazonium salts can be isolated at low...
Engineering
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Products A and B formed in the following reactions are respectively :

  • Option 1)

  • Option 2)

  • Option 3)

  • Option 4)

 

As we have learned

Reaction with Nitrous Acid Primary Amines -

Primary amines react with nitrous acid to produce diazonium ion.

- wherein

R-NH_{2}+HNO_{2}\rightarrow R-N^{\oplus }\equiv N

 

ArNH_{2}+HNO_{2}\rightarrow Ar-N^{\oplus }\equiv N:

 

 

 

 

 


Option 1)

This is incorrect

Option 2)

This is incorrect

Option 3)

This is incorrect

Option 4)

This is correct

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