2015 Final Q9A

[ariana_cruz_1C]

Can someone explain how to name the second structure in this question?

It's 1-(3-chlorocycloheptyl)-2-methylpropan-2-ol

I'm confused why it was named in that order. Where did they start numbering? What does the 1 represent in the beginning? & which carbon chain was seen as the longest/shortest?

[Allison Suzuki 2B]

The main carbon chain is a propane because there is an -OH functional group attached to the second carbon, so the ending will be propanol. The 3 carbons are numbered from right to left, so the cyclohexyl is attached to the first carbon, and the methyl is attached to the second carbon. The cyclohexyl also has a chlorine atom on the third carbon (the first carbon is the one bonded to the propane, and count clockwise).
In alpabetical order, it will go chlorocyclohexyl then methyl.

Therefore the structure of the compound is 1-(3-chlorocyclohexyl)-2-methylpropan-2-ol.