ORGANIC CHEMISTRY (LL) W/ACCESS
ORGANIC CHEMISTRY (LL) W/ACCESS
4th Edition
ISBN: 9781119856122
Author: Klein
Publisher: WILEY
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Chapter 25, Problem 41PP
Interpretation Introduction

Interpretation:

Naturally occurring L-cysteine has “R” configuration need to be explained.

Concept introduction:

Cahn-Ingold-Prelog convention can be applied to derive the configuration of the chirality center depending upon the priority of the groups attached.  The atom which has higher atomic number gets the higher priority followed by the others atoms.  After assigning the priority and numbering, if the sequence 1-2-3 is in clockwise rotation the configuration is assigned as “R” and if it is in counterclockwise then it is assigned “S”.

To explain : To explain why L-cysteine has “R” configuration

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