Question

The correct set of products obtained in the following reactions:

1. \[\ce{RCN ->[reduction]}\]
2. \[\ce{RCN ->[(i) CH3MgBr][(ii) H2O]}\]
3. \[\ce{RNC ->[hydrolysis]}\]
4. \[\ce{RNH2 ->[HNO2]}\]

विकल्प

• A - 2° Amine; B - Methyl ketone; C - 1° Amine; D - Alcohol

• A - 1° Amine; B - Methyl ketone; C - 2° Amine; D - Alcohol

• A - 2° Amine; B - Methyl ketone; C - 2° Amine; D - Acid

• A - 2° Amine; B - Methyl ketone; C - 2° Amine; D - Aldehyde

Answer 1

A - 1° Amine; B - Methyl ketone; C - 2° Amine; D - Alcohol

Explanation:

(A) \[\ce{R - CN ->[reduction] \underset{1° Amine}{R - CH2NH2}}\]

(B) \[\begin{array}{cc}
\phantom{........................}\ce{CH3}\phantom{..........................................}\ce{Br}\\
\phantom{.......................}|\phantom{.............................................}/\\
\ce{R - CH ->[CH3MgBr][H2O] R - C = N - MgBr ->[H2O] R - C - CH3 + NH3 + Mg}\\
\phantom{................................................}||\phantom{....................}\backslash\\
\phantom{...............................................}\ce{\underset{Methyl ketone}{O}}\phantom{.................}\ce{OH}
\end{array}\]

(C) \[\ce{R - NC ->[hydrolysis] \underset{2° Amine}{R - NH - CH3}}\]

(D) \[\ce{R - NH2 ->[HNO2]\underset{Alcohol}{R - OH}}\]