C 5 H 12 has a symmetrical structure with one quaternary carbon. Its IUPAC name is: Options: A . &nbsp 2-Methylbutane B . &nbsp n-Pentane C . &nbsp 2,2-Dimethylpropane D . &nbsp 1-Methylbutane

C5H12 has a symmetrical structure with one quaternary carbon. Its IUPAC name is:

Discussion Forum : Nomenclature Of Organic Compounds

Question -

$C_{5} H_{12}$ has a symmetrical structure with one quaternary carbon. Its IUPAC name is:

Options:

A . 2-Methylbutane

B . n-Pentane

C . 2,2-Dimethylpropane

D . 1-Methylbutane

Answer: Option C
:
C

$C_{5} H_{12}$ is of the form $C n H_{2 n + 2}$ .
Hence it is a saturated alkane. Further, it is given that it has a quaternary carbon. Hence its structure is:

Longest chain = 3 carbons $\Rightarrow$ word root = prop

Primary suffix = ane

Secondary prefix = 2,2-Dimethyl

IUPAC name is (c) 2,2-Dimethyl propane

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