4. Which of the following will not undergo Hoffmann bromamide reaction? O=0 NH2 (a) Ph-C-NH-Br (b) NHẠCH CLNH (a) CH3-C-NH2

Indicate which nitrogen compound amongst the following would undergo Hoffmann bromamide reaction to furnish the primary amine (R-NH_2) .

Hoffmann bromamide reaction involves conversion of a carboxylic acid amide into an amine with a loss of a carbon atom on treatment with aqueous sodium hypobromite. Thus Hoffmann result in shortening of a carbon chain. R-overset(O)overset(||)C-NH_(2) underset(NaOH) overset(Br_(2))to R -NH_(2) +NaBr +Na_(2)CO_(3) Mechanism of the reaction is : Which of the following will not give Hoffmann bromamide reaction.

Arrange the following in the increasing order of melting points (a) NH_3 , (b) CH_3NH_2 , (c ) (CH_3)_2NH , (d) (CH_3)_3N

Arrange the following amines in the decreasing order of their basic strength. NH_3,CH_3-NH_2,(CH_3)_2NH,C_6H_5NH_2 .

In the following Hofmann's bromamide reaction howmany different amines would be formed? CH_(3)-overset(O)overset(||)(C)-NH_(2)+CH_(3)CH_(2)overset(O)overset(||)(C)-overset(15)(N)H_(2)+Br_(2)overset(NaOH)to

(a) Arrange the following compounds in an increasing order of basic strengths in their aqueous solutions: NH_(3), CH_(3)NH_(2), (CH_(3)) _(2)NH, (CH_(3)) _(3)N . (b) Complete the following reaction equations: (i) RCONH_(2) underset(H_(2)O)overset(LAH)(to) (ii) C_(6)H_(5)N_(2)Cl + H_(3)PO_(2) + H_(2)O to (iii) C_(6)H_(5)NH_(2) + Br_(2) (aq) to