Question

IUPAC name of $C{H_3} - CH\left( {OC{H_3}} \right) - C{H_2} - N{H_2}$ is:
A. $2 - $Methylpropanamine
B. $1 - $amino$ - 2 - $methoxypropane
C. $1 - $amino$ - 2 - $methyl$ - 2 - $methoxyethane
D. $1 - $methoxy$ - 2 - $aminopropane

Answer 1

Hint: This question gives the knowledge about the IUPAC naming. It is the way of naming or representing the compounds according to the rules formed by the International Union of Pure and Applied Chemistry. Naming is done in the alphabetical order.

Complete answer:
- IUPAC naming is the way of naming or representing compounds according to the rules formed by the International Union of Pure and Applied Chemistry. Naming in the alphabetical order. IUPAC naming is mostly preferred for complex organic and inorganic molecules. And for simpler compounds common names are used.
- IUPAC naming is usually not followed to avoid tedious and long names in regular communications. Sometimes it can lead to simpler names than the older names. For example, ethanol which is a simpler name is given by IUPAC naming while ethyl alcohol is the older name. Also IUPAC naming helps in identifying the various classes of organic and inorganic compounds.
Consider the given compound,
$C{H_3} - CH\left( {OC{H_3}} \right) - C{H_2} - N{H_2}$
- In the given compound, first we will consider the longest carbon chain. Three carbon alkane chain is the longest chain present that forms propane. Amine functional group is attached to the hydrocarbon chain. And the second carbon methoxy group is attached. Combination of all these in the alphabetical order leads to the formation of $2 - $ Methyl Propanamine.
The IUPAC name of $C{H_3} - CH\left( {OC{H_3}} \right) - C{H_2} - N{H_2}$ is $2 - $ Methylpropanamine.

Therefore, option A is the correct option.

Note: Always remember the concept that IUPAC naming is the way of naming or representing compounds according to the rules formed by the International Union of Pure and Applied Chemistry. For simpler compounds common names are used.