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August 27th, 2017, 07:17 AM   #1
Joined: Feb 2016
From: Australia

Posts: 19
Thanks: 1

Determine R/S configuration of the below molecules.

Hi, I'm not sure why the answer to the question I attached has an R configuration. I attached the question to this post, hopefully it is clear.

The way i worked it out is that the priority from highest to lowest is:
Br > CH2OH > CH3 > H
That would make it an R configuration. But since the H needs to be oriented so that it is at the back of the molecule (there needs to be a dashed bond between H and central carbon), wouldn't the R configuration become an S configuration?
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