Question

Name the following cycloalkane: (FIGURE CAN'T COPY)

   Name the following cycloalkane:
(FIGURE CAN'T COPY)

Organic Chemistry

Organic Chemistry

John McMurry 8th Edition

Chapter 4, Problem 3

Instant Answer

Solved by Expert Bobby Barnes

05/02/2020

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This is done by following the path of the carbon atoms (represented in black) and ignoring the hydrogen atoms (represented in red). Show more…

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Name the following cycloalkane: (FIGURE CAN'T COPY)

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Key Concepts

IUPAC Nomenclature

IUPAC nomenclature provides a systematic method for naming organic compounds, including cycloalkanes. This system ensures that each compound's name conveys its structure unambiguously. In cycloalkanes, the ring itself typically serves as the parent structure, and any substituents attached to the ring are numbered according to specific rules to yield the lowest possible set of locants.

Ring Numbering

Ring numbering is a key step in the naming process of cycloalkanes, where the carbon atoms in the ring are assigned numbers to designate the positions of any substituents. The numbering is done to achieve the lowest combination of numbers possible for the substituents, as per IUPAC rules, which minimizes ambiguity in the molecule’s structural description.

Cycloalkanes

Cycloalkanes are saturated hydrocarbons that form ring structures, where all the carbon atoms are connected through single bonds. They have a general formula of CnH2n when there are no substituents, and their unique cyclic structure can lead to different physical and chemical properties compared to open-chain alkanes.

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Transcript

00:01 We want to name the following cycloat cane.

00:05 Now, let's go ahead and turn this into just the bond line as opposed to this three -dimensional.

00:11 Now, for the hydrogen is in the book, they use red.

00:15 I'm just using white here.

00:17 Or other way around.

00:18 I'm using red, and they're using white, and the black is supposed to be our carbon.

00:22 So we kind of just ignore all the red ones, and then look at how all the black carbons attach if we're going to do the bond line.

00:29 So we'd start from over here and then just keep on following all the carbons like this.

00:36 Now at this point, it's not very clear as to if this carbon is attaching to this carbon or the hydrogen, but it ends up being the carbon because otherwise it would make sense to call this cycloalkane.

00:51 And then we would just connect those.

00:52 And then we'd come back over to this position and then we would connect these here.

00:55 So the reason why i'm just drawing it like that is because now i could come over.

00:59 And pick this up, and we'll have this.

01:03 So don't let this confuse you for a double bond, because we haven't got to alkenes yet.

01:12 So we have this.

01:13 So now we can go ahead and try to name this structure.

01:16 And actually, there should be a carbon right here for both...

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