[specialk08]

So I have a question, I need confirmation if it is correct or not...

Which of the two chair conformations of trans-1,2-dichlorocyclohexane is the lowest energy conformer?

So it would be the chair conformer which has both chloros in the equitorial position, because of steric hindrance.. correct?

And another question....we didn't cover this in class yet so I'm unsure on how to proceed.

Compound D with molecular formula C6H12 is optically inactive but can be resolved into enantiomers. On catalytic hydrogenation D is converted to E (C6H12) and E is optically inactive. Propose structures for D and E.

Thanks in advance for the assistance!

[Dan]

Which of the two chair conformations of trans-1,2-dichlorocyclohexane is the lowest energy conformer?

So it would be the chair conformer which has both chloros in the equitorial position, because of steric hindrance.. correct?

Yes. The key phrase is 1,3-diaxial strain.

Compound D with molecular formula C6H12 is optically inactive but can be resolved into enantiomers. On catalytic hydrogenation D is converted to E (C6H12) and E is optically inactive. Propose structures for D and E.

Hints: Compound D is a racemic mixutre. The source of asymmetry must be an alkene.

[specialk08]

Which of the two chair conformations of trans-1,2-dichlorocyclohexane is the lowest energy conformer?

So it would be the chair conformer which has both chloros in the equitorial position, because of steric hindrance.. correct?

Yes. The key phrase is 1,3-diaxial strain.

Compound D with molecular formula C6H12 is optically inactive but can be resolved into enantiomers. On catalytic hydrogenation D is converted to E (C6H12) and E is optically inactive. Propose structures for D and E.
[\quote]

Hints: Compound D is a racemic mixutre. The source of asymmetry must be an alkene.

Hm! Okay I think that will help along with my textbook.. thanks a lot

[specialk08]

ANother question that I don't feel I need a new thread for....

Adamantane (

How many 6 membered rings are there in this structure?

I determined that there were 4....I think?

Also, how many are in the chair conformation...for some reason I also got 4 for this but I'm not sure if it is right because there is also a space to fill in how many are in the boat conformation :/

[fledarmus]

That looks right to me 

[specialk08]

so it makes sense that there are 4 chair conformations and 0 boat conformations? i thought maybe it did because the chair conformation is so much more common but then i was second guessing myself