Draw structures corresponding to the following names:
a. 2,4-Dimethyl-2-heptanol

Question

Draw structures corresponding to the following names:

a. 2,4-Dimethyl-2-heptanol

Accepted Answer

All right. Hi, everyone. So this question is asking us which structure corresponds to 46 dimethyl hep 1020. And here we have four different answer choices. So recall that an alcohol is described with a modifier, a modifier ol at the end of the parent name. And the reason for this is because it specifies the fact that there is a hydroxy group present in the compound, right? So the phrase hepton to all in the Iupac name of the compound indicates that the parent chain is seven carbons long, hence hepton, it is seven carbons long and there is a hydroxy group attached to one of the carbons specifically given the phrase to oh, the hydroxy group is attached to carbon two of the seven carbon chain. So the first thing I want to point out here is that there is actually an answer choice I can eliminate, consider option eight. Recall that the parent chain of a compound is the longest continuous chain of carbon atoms. And in the case of compound A here, the longest carbon chain is actually six carbons long, not seven. So because of this, I can go ahead and eliminate a as an answer choice entirely. So with that being said, let's go ahead and proceed with drawing out our structure, right. In this case, we're starting off with our seven carbon chain that has a hydroxy group on carbon two. So here's our seven carbon chain and we have a hydroxy group or an O group on carbon too. So with respect to our substituents, recall that substituents are written before the parent name. So that's 46 dimethyl. So the prefix dye in dimethyl indicates that there are two methyl groups in this compound or one carbon substituent. So because there are two position numbers before the name of my substituent, those are going to be the positions of those methyl groups in my compound, right? So 46 dimethyl indicates that I have two methyl groups, one on carbon four and the other on carbon six. So considering the answer choices that I'm given that's going to match with option B in the multiple choice, right? Because if I number the longest carbon chain starting from the, the right side that gives me seven carbons, the hydroxy group is on carbon two and my methyl groups are on carbons four and six. So option B is going to be the correct answer but notice how you could eliminate the other answer choices by considering the positions of substituents on the parrot chain. Option C for example, also contains a seven carbon chain, but the hydroxy group is on carbon three and not carbon two. So that would have eliminated option C, an option D if I start numbering from the left side also contains seven carbons, but I have a methyl group on carbon too as well. The hydroxy group is on carbon too, but so is a methyl group, right? So that would have been incorrect also, but there you have it right? With that being said, thank you so very much for watching. And I hope you found this helpful.

Draw structures corresponding to the following names:
a. 2,4-Dimethyl-2-heptanol

Verified video answer for a similar problem:

Key Concepts

IUPAC Nomenclature

Structural Isomers

Functional Groups

Draw structures corresponding to the following names:a. 2,4-Dimethyl-2-heptanol

Verified video answer for a similar problem:

Key Concepts

IUPAC Nomenclature

Structural Isomers

Functional Groups

Draw structures corresponding to the following names:
a. 2,4-Dimethyl-2-heptanol