Question

The name 2-ethyl-3-chlorohexane does not follow IUPAC conventions.

What is the systematic name of this organic compound?
(A) 3-chloro-2-ethylhexane
(B) 4-chloro-3-methylheptane
(C) 4-chloro-5-ethylehexane
(D) 5-methyl-4-chloroheptane

Answer 1

(C) 4-chloro-5-ethylehexane

Step-by-step explanation:

The correct systematic name of the organic compound 2-ethyl-3-chlorohexane can be determined by identifying the longest continuous chain of carbon atoms, which in this case is six carbons long. The chain can be numbered from either end, but it should be numbered in such a way that the substituents (ethyl and chloro) are assigned the lowest possible numbers.

Starting from the left end of the chain, we can see that the first substituent is ethyl (a two-carbon group) attached to the second carbon atom, and the second substituent is chloro (a one-carbon group) attached to the third carbon atom. Therefore, the correct systematic name of this compound is 5-chloro-2-ethylhexane, which corresponds to answer choice (C).