Amongst the given set of reactants, the most appropriate for preparing 2° amine is _____.
• When condensation occurs between a primary amine and aldehyde or a ketone a new imine compound ( Schiff base)n is formed.
• The reduction of this N-substituted imine on reduction with H2/Pt or any other strong reducing agents gives secondary amines.
Among the other 3 options (i) 2° R—Br + NH3 (ii) 2° R—Br + NaCN followed by H2/Pt and (iv) 1° R—Br (2 mol) + potassium phthalimide followed by H3O+/heat do not necessarily form a secondary amine.
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