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Amines · Question 56

AIPMT 2002MCQEasy📈 Topic in 62% papers+4−1
1

CH3CH2Cl NaCN X Ni/H2 Y acetic anhydride Z Z in the above reaction sequence is

  1. CH3CH2CH2NHCOCH3
  2. CH3CH2CH2NH2
  3. CH3CH2CH2CONHCH3
  4. CH3CH2CH2CONHCOCH3

Answer

(1) CH3CH2CH2NHCOCH3

Solution

CH3CH2Cl NaCN CH3CH2CN (X) (nucleophilic substitution)

CH3CH2CN Ni/H2 CH3CH2CH2NH2 (Y) (reduction of nitrile)

As per NCERT, primary amines undergo acylation with acid anhydrides to form amides.

CH3CH2CH2NH2 + (CH3CO)2O CH3CH2CH2NHCOCH3 (Z) + CH3COOH

Answer: (1)

AIPMT 2002

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2

Intermediates formed during reaction of [figure] with Br2 and KOH are

  1. RCONHBr and RNCO
  2. RNHCOBr and RNCO
  3. RNH-Br and RCONHBr
  4. RCONBr2
AIPMT 2001
3

A reduction B CHCl3/KOH C reduction N-methylaniline then A is

  1. [figure]
  2. [figure]
  3. CH3NH2
  4. [figure]
AIPMT 2000

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