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Question
Amongst the given set of reactants, the most appropriate for preparing 2° amine is ______.
Options
\[\ce{2° R - Br + NH3}\]
\[\ce{2° R - Br + NaCN followed by H2 /Pt}\]
\[\ce{1° R - NH2 + RCHO followed by H2/Pt}\]
\[\ce{1° R - Br (2 mol) + potassium phthalimide followed by H3O+/heat}\]
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Solution
Amongst the given set of reactants, the most appropriate for preparing 2° amine is \[\ce{1° R - NH2 + RCHO followed by H2/Pt}\].
Explanation:
\[\ce{\underset{1° Amine}{R - NH2} + \underset{Aldehyde}{O = HCR} ->[Reductive][amination] R - N - CHR ->[H2/Pt][Reduction] \underset{2° Amine}{RNH - CH2R}}\]
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