An aromatic compound 'A' on treatment with aqueous ammonia and heating forms compound 'B' which on heating with $Br _2$ and KOH forms a compound ' C ' of molecular formula $C _6 H _7 N$. Write the structures and IUPAC names of compounds $A, B$ and $C$.
Answer
Reaction and $A , B , C$ and their names are as follows :
Cyclohexanamine is more basic than benzenamine why?
Answer
In cyclohexanamine, the lone electron pair of nitrogen is easily available because there is no resonance in it, whereas in benzenamine (aniline), the lone electrons pair of nitrogen is not easily available due to resonance, hence cyclohexanamine is more basic than aniline.
Ethanamine is completely soluble in water, whereas benzenamine (aniline) is almost insoluble in water, why?
Answer
Ethanamine easily forms inter molecular hydrogen bonds with water, hence it is completely soluble in water. Due to the large, size of the phenyl group in aniline, it is unable to form hydrogen bonds with water, hence it is almost insoluble in water.
A primary amine (molecular weight 31) reacts with carbon disulphide in the presence of HgCl2 to form a compound which smells like mustard oil. Give the formula and chemical equation of primary amine.