Page 1 of 1

Priority in Methyl vs Fluorine

Posted: Fri Mar 11, 2016 11:28 pm
by Sandeep Gurram 2E
Hello,

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.

Thanks

Re: Priority in Methyl vs Fluorine

Posted: Fri Mar 11, 2016 11:48 pm
by Chem_Mod
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