Final 2014 #7E and 7F

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Kevin Pham 2G
Posts: 12
Joined: Fri Jul 15, 2016 3:00 am

Final 2014 #7E and 7F

Postby Kevin Pham 2G » Sat Mar 18, 2017 3:48 pm

For 7E, I understand why C(OH)3 is opposite CN in the Newmann projection. But for 7F, why is Cl instead of CH3 opposite CN in the Newmann projection?

Jimmy Zhou 3D
Posts: 30
Joined: Sat Jul 09, 2016 3:00 am

Re: Final 2014 #7E and 7F

Postby Jimmy Zhou 3D » Sat Mar 18, 2017 11:24 pm

The important part isn't to worry about the Cl but to notice that the C(OH)3 is right next to the CN in guanche conformation. Either structure would have been acceptable as they would be equivalent in stablility in terms of conformation.

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