Question

Name the IUPAC name of neopentane.
A. 2-methylbutane
B. 2, 2-dimethylpropane
C. 2-methylpropane
D. 2, 2-dimethylbutane

Answer 1

Hint:First of all we should be aware of IUPAC. The method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC) is known as the IUPAC nomenclature of a compound.

Complete step-by-step answer:Rules of writing IUPAC name of a compound.
A. For the identification of parent chain
1.It should consist of a maximum number of substituents or branches as prefixes.
2.It should consist of the maximum number of substituents of the suffix functional group.
3.Must have the maximum length.
4.Must contains the maximum number of multiple bonds.
5.Should have maximum number of single bonds.
B. The highest order of presence is required for the identification of functional group.
C. Numbering of the carbon atom should be done in the parent chain, from the end which gives the substituents as the lowest numbers.
D. In a condition, where the same substituent occurs more than once then the substituent group is indicated by a prefix (di, tri, tetra, etc.)
E. In the case of two or more different substituents they should be written in alphabetical order
F. A cyclic or ring hydrocarbon is written by the prefix cyclo- before their base name.

The correct option is B, which IUPAC name of neopentane is 2, 2-dimethylpropane.

Note:The main aim of IUPAC nomenclature is to provide each structure a unique and unambiguous name, and to give each name a unique and unambiguous structure. It creates a standardized way to name chemical compounds.