Question

Number of amine compounds from the following giving solids which are soluble in NaOH upon reaction with Hinsberg's reagent is _____.

Answer 1

Primary amines react with Hinsberg’s reagent to form sulphonamides, which are soluble in NaOH. Analyzing the given structures:
Primary amine NH$_2$ : Soluble.
NH-C($-$CH$_3$) : Soluble.
Other primary amine structures : Soluble.
All 5 compounds are primary amines.
Final Answer:
$5.$

Answer 2

Primary amines react with Hinsberg’s reagent to form sulphonamides, which are soluble in NaOH. Analyzing the given structures:
Primary amine NH$_2$ : Soluble.
NH-C($-$CH$_3$) : Soluble.
Other primary amine structures : Soluble.
All 5 compounds are primary amines.
Final Answer:
$5.$