IUPAC Nomenclature help.
@nincompoop

Question

abhisar · Answer

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abhisar · Answer

Why 3-carbamoyl-2-methylpropan-1-oic acid is wrong and 2-carbamoylpropanoic acid is correct?

abhisar · Answer

Is this the wrong way?

imqwerty · Answer

its correct

imqwerty · Answer

uh wait i read that 2nd one wrong :/i think 1st one is correct

abhisar · Answer

But the correct answer is second option and it's possible when numbering is done in this way

parthkohli · Answer

yeah

abhisar · Answer

It appears since amide is substituent here, its carbon is not counted. Is this a rule or something?

parthkohli · Answer

yes, that's a rule

abhisar · Answer

Could you cite me any reference?

parthkohli · Answer

idk man no one cares so much about nomenclature

abhisar · Answer

If you don't know then how can you say it's a rule.

parthkohli · Answer

i don't know any online sources that care so deeply about nomenclature. you can refer to a compound however you want it to be. minute differences do not matter.

abhisar · Answer

That's highly subjective thought. Anyways thanks.

parthkohli · Answer

but we discussed this rule in the class so yeah.

parthkohli · Answer

kainui has the same feelings...

abhisar · Answer

If no one cares, they probably wouldn't be discussing it in classes. It's important to name the compound correctly. Name for every compound is unique so I can't refer to them whatever I want.

parthkohli · Answer

i think you need to know the basics but that's about it

frostbite · Answer

as a general rule: your nomenclature just need to be so specific you can't mistaken the molecule you are talking about for something else.

parthkohli · Answer

EXACTLY what I said yesterday.

frostbite · Answer

If in doubt about IUPACs rules then just look into the golden book: http://goldbook.iupac.org/PDF/goldbook.pdf

parthkohli · Answer

Look here:

parthkohli · Answer

This software says it's the preferred IUPAC name. So you see how IUPAC doesn't mind.

frostbite · Answer

Yeah I would say 2-carbamoyl-2-methylacetic acid too, but I guess I would mostly because I am a biochemist where we don't use 100% systematic naming.

frostbite · Answer

Here it was: http://goldbook.iupac.org/A00263.html

nincompoop · Answer

we need to name compounds not the "correct" way, but in a way we all can understand each other, so we have to create a system.

parthkohli · Answer

yesssss