Is it necessary for a chain of compound to have a functional group or they can be named without a functional group?I know that the longest continous chain must be selected for naming ,but I found a quote which was saying that the longest chain with afunctional group ,"if present" must be chosen to be named it confused me about the necessity of functional group?


closed as off-topic by Mithoron, Todd Minehardt, airhuff, Jan, bon Feb 7 '18 at 11:59

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    $\begingroup$ What would you think will happen if you try to name a compound without any functional groups (BTW, yes, such compounds do exist)? Will the world go down with error 500? $\endgroup$ – Ivan Neretin Feb 6 '18 at 11:59
  • $\begingroup$ I personally not aware of such compounds and I think it would be difficult to name a compound without a functional group $\endgroup$ – Rabik John Feb 6 '18 at 12:23
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    $\begingroup$ On the contrary, this is by far the easiest case, hence all textbooks start with it. Are you reading yours from the middle? $\endgroup$ – Ivan Neretin Feb 6 '18 at 12:32
  • $\begingroup$ No ,this topic is not included in my textbook ,I find a quote in my mcqs book $\endgroup$ – Rabik John Feb 7 '18 at 4:13

What it means is that, if you have a compound like this:

enter image description here

You must name it as


taking the chain having $\ce{-OH}$ instead of


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    $\begingroup$ To add to this answer (+1): if a compound does not have any functional group, just don't worry about its absence, and take the longest possible carbon chain. $\endgroup$ – Gaurang Tandon Feb 6 '18 at 15:19

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