An aromatic compound 'A' of molecules formula C7H6O2 undergoes a series of reaction as shown below. Write the structures of A,B,C,D and E in the following reactions:
OR
(a) Write the structures of main products when benzene diazonium chloride reacts with the following regents:
(i) H3PO2 + H2O
(ii) CuCN / KCN
(iii) H2O
(b) Arrange the following in the increasing order of their basic character in an aqueous solutions:
C2H5NH2, (C2H5)2NH, (C2H5)3N
(c) Give a simple chemical test to distinguish between the following pair of compounds:
C2H5 − NH2 and C6H5 − NH − CH3
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(b) Order of basic strenght
C2H5NH2 < (C2H5)2NH < (C2H5)3N
(c) C6H5 − NH2 (Primary amines) and C6H5 − NH − CH3 (secondary amines) can be distinguished by Hinsberg's test. In this test amines are allowed to react with Hinsberg's reagent, benzeneesulphonyl chloride (C6H5SO2Cl). Primary amines reacts with this reagent to form N-alkylbenzene sulphonyl amide which is soluble in alkali but secondary amines gives sulphonamide which is insoluble in alkali
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