Bromopentane

Bromopentanes are a group of related chemical compounds which are brominated derivatives of pentane. There are three constitutional isomers which are distinguished by the location of the bromine atom:
1-Bromopentane
2-Bromopentane
3-Bromopentane
There can also be different connectivity between the 5 carbon atoms. So pentane can either have 5 carbons in a straight chain, or it can be branched. Pentane has two possible branched structures: 2-methylbutane (“isopentane”) and 2,2-dimethylpropane (“neopentane”).
For 2-methylbutane, the possibilities for combining with bromine are:
1-bromo-2-methylbutane
2-bromo-2-methylbutane
2-bromo-3-methylbutane
1-bromo-3-methylbutane
For 2,2-dimethylpropane, there is only one possible brominated derivative:
1-bromo-2,2-dimethylpropane

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