1.

a. Distinguish between 1^(@),2^(@), and 3^(@) amines by using succine anhydride (A). b. What are the limitations of Hinsberg reagent? c. Give the structural formula of a chiral compound C_(8)H_(11)N(X), which dissolves in dilute HCl and evolves N_(2) gas with HNO_(2).

Answer»

Solution :

(iii) `3^(@)` amine does not REACT with `(A)`, the unreacted amine dissolve in aqueous ACID `(H_(3)O^(o+))`.
b. The amines must be water-insoluble liquids.
C. `D.U.` in `(X)=((2n_(C)+2)-(n_(H)-n_(N)))/(2)=(18-10)/(2)=4^(@)`
(i) `4 D.U.` in `(X)` suggests that it CONTAINS benzene ring.
(ii) `(X)` is a `1^(@)` amine SINCE it dissolve in `HCl` and gives `N_(2)` with `HNO_(2)`.
(iii) The remaning `C` atom the `NH_(2)` must form a chiral molecule. So, `(X)` is :


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