Question

The IUPAC name $C{H_2}(OH) - CH(NH{_2}) - COOH$
A.2-amino-3-hydroxypropanoic acid
B.1-hydroxy-2-aminopropan-3-oic acid
C.1-amino-2-hydroxypropanoic acid
D.3-hydroxy-2-aminopropanoic acid

Answer 1

Firstly by the basic rules of the IUPAC naming we get the rules followed for the correct naming process. Now these rules are, following priority order, the arrangement of the groups in the right alphabetical order for the sake of naming and to deduce the numbering by chief functional group. By following this we will get the right numbering and then we can put it in the correct sequence to get the right name.

Complete step by step answer:
Here we have to firstly take many of the things into the account:
The correct IUPAC naming is governed by various simple and useful rules which are given by the naming committee.
Some of them are :
i.While naming the priority order should be taken into account.
ii.Apart from that we have to arrange the components in the alphabetical order when we have to write them in the IUPAC naming.
iii.To start the numbering the beginning is with the carbon with the functional group with the highest priority in the priority order.
In basic naming these rules are almost all we need to govern the naming process. This is not a branched compound and the carbons in the functional chain are $3$ so the prefix would be prop.
Apart from that we can say that the functional group is the carboxylic acid so the suffix would be oic acid.
Therefore the correct order would be :

Now by that we will get the correct IUPAC name as 2-amino-3-hydroxypropanoic acid
So that gives us the correct option as A, 2-amino-3-hydroxypropanoic acid.

Note: In chemical nomenclature, the IUPAC nomenclature of organic chemistry is a method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC). It is published in the Nomenclature of Organic Chemistry (informally called the Blue Book).