Name the following compounds

Question

can someone help me check my work

A. CH3

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CH3-CH-CH=C-CH3

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CH2CH3

B. CH3(CH2)5CH-C(triple bond)CH

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Cl

C. CH3 CH2CH3

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CH3-C-CH2-CH-CH3

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CH2CH3

my answers

a) 2-butene

b) I really have no idea

c) butane's isomer

Answer 1

a) This is incorrect. Is the longest continuous carbon chain 4 carbons? No, it is 6 carbons so it won't be a butene, but rather a hexene, and more specifically a hex-2-ene. Then add the 4-ethyl and the 2-methyl as substituents. Give it another try.

b) The (CH₂)₅ means there are 5 CH₂'s making the chain 9 carbons in length. This would be nonane. But you have a triple bond at carbon 1 so it becomes nonyne. Now we have a Cl group off carbon 3, so the name of the compound is 3-chlorononyne.

c) No. This can't be an isomer of butane, because butane is C₄H₁₀ and there are a lot more than 4 carbons and 10 hydrogens in this compound. Again, look for the longest continuous carbon chain. Here it is 7 carbons, making it a heptane. Then there are 2 methyl groups on carbon 3 and one methyl group on carbon 5, so we would name this compound 3,3,5-trimethylheptane. This is not an easy one, by the way.