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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: FictionDurden on October 09, 2004, 05:44:43 PM

Title: Alkene nomenclature
Post by: FictionDurden on October 09, 2004, 05:44:43 PM

I am having trouble with a nomenclature for alkenes problem. Please open the picture attached. If that doesn't work, here is a description:

First, there is a pentane ring (5 carbon ring) and a bond attached to the carbon which is next to the carbon at the top of the ring (the pointy part). That bond is CH2-CH2-C ( with a methyl group attached at the top) double bonded to C with two methyl groups.


Okay, my guess is 6-cyclopentyl-2,3-dimethyl-2-hexene. Please *delete me* Thanks.

Title: Re:Alkene nomenclature
Post by: Donaldson Tan on October 09, 2004, 06:19:53 PM

4-cyclopentyl-butene, I think

Title: Re:Alkene nomenclature
Post by: FictionDurden on October 09, 2004, 11:59:52 PM

Quote from: geodome on October 09, 2004, 06:19:53 PM

4-cyclopentyl-butene, I think

How did you get that? If it's butene, wouldn't there be 2 methyl groups as substituents?

Title: Re:Alkene nomenclature
Post by: movies on October 10, 2004, 01:51:26 PM

ChemDraw says it's (3,4-dimethylpent-3-enyl)cyclopentane.  That might not be the best answer though.  It depends on whether or not carbocyclics are higher naming priority than alkenes.