CH3CH2ClNaCN−−−−−→XNi/H2−−−−−→YAceticanhydride−−−−−−−−−−−−−−→Z Z in the above reaction sequence is:
A
CH3CH2CH2NHCOCH3
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B
CH3CH2CH2NH2
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C
CH3CH2CH2CONHCH3
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D
CH3CH2CH2CONHCOCH3
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Solution
The correct option is BCH3CH2CH2NHCOCH3 Z in the given reaction sequence is CH3CH2CH2NHCOCH3. CH3CH2ClNaCN−−−−−→CH3CH2CNXNi/H2−−−−−→CH3CH2CH2NH2YAceticanhydride−−−−−−−−−−−−−−→
CH3CH2CH2NHCOCH3Z Ethyl chloride reacts with sodium cyanide to form propionitrile. Cl is displaced with -CN. Hydrogenation in presence of Ni reduces cyano group to amino group. Acetylation with acetic anhydride gives the final product Z in which the amino group is acetylated.