Question

Give the structure and IUPAC name of Di-tert-butylamine.

Answer 1

Hint: Amines are the alkyl or aryl-substituted derivatives of ammonia. The number of possible amines is very large as there are three replaceable hydrogen atoms in ammonia which can be replaced by alkyl or aryl groups. Amines are classified as primary, secondary, and tertiary amines depending on whether one, two, or three alkyl or aryl groups are respectively attached to the nitrogen atom.
$N{H_3}\xrightarrow[{ + R}]{{ - H}}RN{H_2}\xrightarrow[{ + R}]{{ - H}}{R_2}NH\xrightarrow[{ + R}]{{ - H}}{R_3}N$

If the R is alkyl then the amine is an aliphatic amine. If the r is aryl then the amine is aromatic. An amine in both alkyl and aryl groups are present is called a mixed amine. Tetra-alkyl or Tetra-aryl ammonium salts are called quaternary salts.
According to the IUPAC, system amine is taken as the amino derivatives of corresponding alkanes. They are called alkanamines. For naming an amine, the ‘e’ of the parent alkane is replaced by the suffix amine. The higher he and more complicated members are named according to the IUPAC system. The position of the amino group is indicated in the longest chain selected.

Complete step by step answer:
The structure of Di-tert-butylamine is drawn below:

The IUPAC name of Di-tert-butylamine is 2- Methyl- N- (2- methyl- 2- propanyl)-2- propanamine.

Note: Structure of amines: - We know that ammonia has a pyramidal structure and its nitrogen atom is $s{p^3}$ hybridized. Like ammonia, all amines (primary, secondary or tertiary) are pyramidal in shape. Also since lp-bp repulsions are greater than bp-bp, the bond angle between any two H- atoms or alkyl groups decreases from ${109^ \circ }{28^/}$ to ${107^ \circ }$ in primary and secondary amines. But in tertiary amines, due to steric hindrance between the three bulky alkyl groups, the bond angle increases from ${107^ \circ }$ in ammonia to ${108^ \circ }$ in trimethylamine.