Chemical Forums
Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: Aakash on December 06, 2013, 08:56:32 AM
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The compound is 5-(1-Methylethyl)-2-methyl-octane
can we write it like 2-methyl-5-(1-Methylethyl)-octane ? Why /why not?
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You mean this molecule?
in that case the first is more correct, but methyl ethyl!! How about 5-isopropyl-2-methyloctane?
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yes. That is the one. I read that each compound has unique name in IUPAC nomenclature. so only one of those two can be true?
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Find the longest chain.
The substituents must be placed in the name in alphabetical order.
The numbers must add up to the lowest total.
So 5-isopropyl-2-methyloctane is correct.
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you said isopropyl but I read that iso was used in trivial naming.
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Iso is an allowed prefix under IUPAC.
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Okay so both the names which I suggested in the question are wrong?
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Yes, unfortunately.