The isomers of C8H11N, that can be prepared by Gabriel phthalimide synthesis are primary amines.

can be prepared by Gabriel phthalimide synthesis because SN2 is possible in

Secondary amines react with Hinsberg’s reagent to give solid insoluble in NaOH. Hence, Q is the secondary amine

Aromatic amines like aniline give diazonium salts. The diazonium salt used in diazo coupling to get red dye with beta Naphthol in sodium hydroxide. Hence, R is aromatic amine as shown below.




