Editing Heptane (section)

==Preparation==
The linear ''n''-heptane can be obtained from [[Jeffrey pine]] oil.<ref name=edgar>{{cite journal | doi = 10.1021/ja01380a027| title = The preparation and properties of the isomeric heptanes. Part I. Preparation | date = 1929| last1 = Edgar| first1 = Graham| last2 = Calingaert| first2 = George| last3 = Marker| first3 = R. E.| journal = Journal of the American Chemical Society| volume = 51| issue = 5| pages = 1483–1491}}</ref>  The six branched isomers without a quaternary carbon can be prepared by creating a suitable secondary or tertiary [[Alcohol (chemistry)|alcohol]] by the [[Grignard reaction]], converting it to an [[alkene]] by [[dehydrogenation]], and [[hydrogenation|hydrogenating]] the latter.<ref name=edgar/>  The 2,2-dimethylpentane isomer can be prepared by reacting ''tert''-butyl chloride with ''n''-propyl magnesium bromide.<ref name=edgar/>   The 3,3-dimethylpentane isomer can be prepared from ''tert''-amyl chloride and ethyl magnesium bromide.<ref name=edgar/>