Question

The IUPAC name of ethyl isopropyl ketone
A.4- methyl-3-pentanone
B.1,1-dimethyl-2-butanone
C.2-methyl-3-pentanone
D.4,4- dimethyl-3-butanone

Answer 1

Hint: We are asked the IUPAC name of ethyl isopropyl ketone. First we will discuss the IUPAC names and then we will discuss the IUPAC name of ethyl isopropyl ketone. We need to understand the prefix and suffix in IUPAC nomenclature.

Complete step by step answer:
IUPAC names are listed within the discussion of naming alkanes. Generally, the base part of the name reflects the number of carbons in what you have assigned to be the parent chain. The suffix of the name reflects the type of functional group present on (or within) the parent chain. Other groups which are found to be attached to the parent chain are called substituents. IUPAC names have a great importance in chemistry because with the help of these we can do the naming of chemical compounds which is very important. Once we come to know the name of the compound then we can easily get the information of the compound.
Ethyl isopropyl ketone belongs to the class of organic compounds known as ketones, also known as 2-methyl-3-pentanone.

So, the correct answer is “Option A”.

Note:
Ethyl isopropyl ketone (2-methyl-3-pentanone) is an aliphatic ketone used as a reagent in organic chemistry and as a solvent.
Here are some rules for IUPAC nomenclature , by these rules we can do IUPAC nomenclature to any chemical compound.
Find and name the longest continuous carbon chain first.
Then identify and name groups attached to this chain.
Number the chain consecutively, starting at the end nearest a substituent group.
Designate carefully the location of each substituent group by an appropriate number and name.