Isomeric amines with molecular formula 
give the following tests
Isomer (P) 
Can be prepared by Gabriel phthalimide synthesis
Isomer 
Reacts with Hinsberg's reagent to give solid insoluble in 
Isomer 
Reacts with HONO followed by 
-naphthol in 
to give red dye.
Isomers (P), (Q) and (R) respectively are
Text Solution
Verified by ExpertsA
(P) Gabriel phthalimide synthesis is used for the preparation of aliphatic primary amines. Aromatic primary amines cannot be prepared by this method.
(Q) 
-amines reacts with Hinsberg's reagent to give solid insoluble in 
(R) Aromatic primary amine react with nitrous acid at low temperature 
to form diazonium salts, which form Red dye with 
Naphthol
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