Aliphatic Compounds Containing Nitrogen - Result Question 9

####9. The major product of the following reaction is

(2019 Main, 10 Jan II)

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Answer:

Correct Answer: 9. (c)

Solution:

  1. NaBH4 is a selective reducing agent. It can reduce >C=O group into alcohol, N-methyl imine group, MeN=CH into 2-amine but cannot reduce an isolated C=C.

10 Acetylation by Ac2O/Et3N is possible with NH2(1-amine ) and OH (alcohol) groups only, but not with ’ NH2 ’ part of

CNH2 (amide) groups, because the lp of nitrogen in amide group is involved in resonance with C=O part.

|,Ac2O or (CH3CO)2O(2 moles ) Et3N 2AcOH



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