Naming Alkyl Halides

Nomclature Alkyl Halides Video Tutorial Leah Fisch OrgoNaming Organic Compounds Series: Video 9
The Naming Alkyl Halides tutorial video takes you through my puzzle piece approach to IUPAC Nomenclature for compounds containing the halogens F, Cl, Br and I. Examples include simple and substituted alkyl halides, along with halogenated alkenes and cyclic compounds.

(Watch on YouTube: Alkyl Halides. Click CC on bottom right for transcript.)

<– Watch Previous Video: Naming Enynes (alkene + alkyne on same compound)
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This is Video 9 in the Naming Organic Compounds Video Series. Click HERE for the entire series.

Need a review on Functional Groups? Watch the Functional Groups Video, Download the Cheat Sheet, then try the Quiz.


  1. Leah; thank you very much. Your way of explaining is great. Thank you very much. Flor from Mexico City.

  2. what if instead of i iodine there were 2 4m where should we start ?
    ……. do we take alphabetical order in such a case /

  3. I noticed that you do not keep the 1 (4:44), BUT in some of the alkane and alkyne examples, the 1 is kept. ie 1-fluorocyclohexane and 2-methyl-1-pentane. The 1 is removed for the first example, but the latter keeps the 1. Could you further explain the difference?

    • When there is no doubt about the #1 it can be omitted, however when there can be ambiguity a number must be included. In the 1-fluorocyclohexane example there is only 1 substituent on the entire ring and so it will be understood that fluorine is in the number 1 position. However, in the case of 2-methyl-1-pentane there are 5 carbon atoms which can potentially be substituted and so a number must be included to show where each substituent occurs on the molecule

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