What is the IUPAC name of the molecule shown? **It is VERY IMPORTANT that I get

Question

What is the IUPAC name of the molecule shown?

**It is VERY IMPORTANT that I get this right, so please explain your answer so I have confidence that it is correct and that I can understand it*

(C is WRONG)

A) 1-bromo-1,3-dimethyl-4-pentanone

B) 5-bromo-3,5-dimethyl-2-pentanone

C) 2-bromo-4-methyl-5-hexanone

D) 5-bromo-3-methyl-2-hexanone

E) none of these

What is the IUPAC name of the molecule shown? **It is VERY IMPORTANT that I get this right, so please explain your answer so I have confidence that it is correct and that I can understand it* (C is WRONG) A) 1-bromo-1,3-dimethyl-4-pentanone B) 5-bromo-3,5-dimethyl-2-pentanone C) 2-bromo-4-methyl-5-hexanone D) 5-bromo-3-methyl-2-hexanone E) none of these

Explanation / Answer

The functional group in this compound is a ketone. The longest carbon chain is a hexanone and the ketone group is on carbon 2. You have to start counting from the left. As you start counting, there is a bromine on carbon 5 and a methyl on carbon 3. So, the anwer is D. Hope this helps! :-)

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