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The product (A) formed in the following reaction sequence is : CH3–C≡CH (i) Hg2+, H2SO4 (ii) HCN (iii) H2/Ni → (A) Product

1. CH3–C(NH2)(CH2OH)–CH3
2. CH3–C(OH)(CH2NH2)–CH3
3. CH2–CH2–CH(NH2)–CH2OH
4. CH2–CH2–CH(OH)–CH2NH2

Correct answer: CH3–C(OH)(CH2NH2)–CH3

Solution

The correct option is right because the reaction sequence involves the hydration of the alkyne followed by the addition of HCN, leading to the formation of a cyanohydrin, which upon hydrogenation produces the final product with both an alcohol and an amine group attached to the same carbon.

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