In order to prepare a 1° amine from an alkyl halide with simultaneous addition of one CH2 group in the carbon chain, the reagent used as source of nitrogen is ___________.
1
Sodium amide, NaNH2
2
Sodium azide, NaN3
3
Potassium cyanide, KCN
4
Potassium phthalimide, C6H4 (CO)2N– K+