Which of the following reaction is involved in the preparation of primary amines: (i) Hofmann’s bromamide reaction and (ii) Gobriel phthalimide synthesis

Step-by-step solution

(i) Hofmann’s bromamide reaction : The conversion of a primary amide to a primary amine, containing one carbon atom less than the original amide, on heating with a mixture of Br 2 in presence of NaOH is called Hofmann’s bromide reaction CH 3 CONH 2 + Br 2 + 4 NaOH → CH 3 NH 2 + 2 NaBr + Na 2 CO 3 + 2 H 2 ​ O Acetamide Methylamine (ii) Gabriel phthalimide reaction: This is a very convenient method for the preparation of pure aliphatic and aryl primary amines.