Question

Which would yield propylamine? Two of the above All of the above Select the reagent from the list below that could be the basis of a simple chemical test that would distinguish between each of the following: Cold dilute NaHCO_3 Cold dilute HCl NaNO_2, HC1, 5degreeC, then 2-naphthol C_6H_5SO_2Cl, OH-, then HCl Cold dilute NaOH

Answer 1

1) C₂H₅Br + NaCN ----> C₂H₅CN + LiAlH₄ ------> C₂H₅CH₂NH₂

2)(a) C₆H₅CONH₂ is an acid derivative while C₆H₅CH₂NH₂ is an amine

Thus, cold dilute NaOH will react with the acid derivative but not with the amine

(b) Hinsbergs reagent i.e C₆H₅SO₂Cl,OH^-, then HCl will be able to distingiush between the primary and seconday amine

c) benzamine (or aniline) will form diazonium salt while cyclohexanamine will not on reaction with NaNO₂,HCl