Priority in Methyl vs Fluorine

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Sandeep Gurram 2E
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Priority in Methyl vs Fluorine

Postby Sandeep Gurram 2E » Fri Mar 11, 2016 11:28 pm


I just faced a problem where apparently a methyl group has higher priority than a fluorine; is this true? My thought process was that the fluorine should have more priority as it has a higher atomic number over carbon.


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Re: Priority in Methyl vs Fluorine

Postby Chem_Mod » Fri Mar 11, 2016 11:48 pm

Fluorine should have higher priority. My guess is that you might run into a cis/trans problem where you have two methyl in 2 sides of the double bonds. For cis/trans they actually compared the relative positions between two identical groups across the double bond

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