IUPAC Names of Organic compounds (2)

[CroSinus]

Homework Statement

Name the following compound according to the IUPAC rules:

Homework Equations

The Attempt at a Solution

Help me with the answer, please!
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[baldbrain]

Homework Statement

Name the following compound according to the IUPAC rules:
View attachment 228517​

Homework Equations

The Attempt at a Solution

View attachment 228519

Help me with the answer, please!
​

You select the chain with more no. of substituted carbons. If that gives you more than possible answer, either you apply the other rules (for functional groups if any), or in some cases, it doesn't matter which chain you select. All give the same compound. So, which chain(s) have more no. of substituted carbons?

 

[CroSinus]

Well, it appears to be the chain number (2), OR (3). Is there a place where I can find all the important rules for naming alkanes in one location?
Thank you for your help.
CroSinus

 

[baldbrain]

Exactly. And hence, it doesn't matter in this case. It's 3-ethyl-2-methylpentane.
It's hard to find all in one place, though a simple Google search of the IUPAC nomenclature will render you the most important ones. It's better to just learn them as they come across. Still, you can see the Khan Academy videos.