Question

What is the proper name of the compound below?

A.$1-$ phenoxyethanol.
B.ethyl phenyl ether.
C.n-butyl hydroxy benzene.
D.m-butylphenol.

Answer 1

We know that the growing number of organic compounds found each day, along with the fact that many of these compounds are isomers of other compounds, necessitates the creation of a formal nomenclature scheme. Each distinct compound must be assigned a distinctive and unique name, just as each distinct compound has a unique molecular structure that can be designated by a structural formula.

Complete answer: As we know that the substituted benzene ring compounds have a less systematic nomenclature than alkanes, alkenes, and alkynes. As seen by the combined names mentioned below, a few mono-substituted compounds are named by using a group name as a prefix to "benzene." The rest of these molecules, on the other hand, have one-of-a-kind names. In order to learn these titles, memorization is the only option.
Phenyl, abbreviated Ph-, and benzyl, abbreviated Bn-, are two frequently found substituent groups that incorporate a benzene ring. These are shown along with illustrations of how they should be used. A phenyl group should not be confused with the compound phenol. Ar- for an aryl group is a general and useful standardized notation that complements the use of R- for an alkyl group (any aromatic ring).
Here, the benzene compound is with an alcohol group attached to it thus it’s clear that it's Phenol.
Also there is $C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}$ group attached at Meta position. Thus it’s clear that its m-butyl
Therefore, the correct answer is option D.

Note:
Remember that if there are three or more substituent classes, the ring is numbered in a manner that assigns the lowest possible numbers to the substituents, as seen in the last row of instances. In the final name, the substituents are classified alphabetically. The numbering refers to the alphabetical order if the substitution is symmetrical.