Central Chirality Cahn-Ingold-Prelog Rules: Assignment of Absolute Configuration penicillin 1. Locate all stereocenters (chiral carbons, asymmetric centers) H 2. Prioritize al| 4 unique groups/atoms attached to each chiral atom. Make tables as needed to help. Top priority (1): goes to group that has the heaviest atom at the first point of difference moving away towards the stereocenter. HO- Lowest priority (4): goes to the group that has the lightest atom at the first point of difference moving away from the stereocenter. 3. If Necessary, orient the molecule so that the 4th priority group is pointing away from your eye. 4. Determine if sequence of 1→2→3 is clockwise or counterclockwise. Clockwise = (R) Counterclockwise = (S)
Central Chirality Cahn-Ingold-Prelog Rules: Assignment of Absolute Configuration penicillin 1. Locate all stereocenters (chiral carbons, asymmetric centers) H 2. Prioritize al| 4 unique groups/atoms attached to each chiral atom. Make tables as needed to help. Top priority (1): goes to group that has the heaviest atom at the first point of difference moving away towards the stereocenter. HO- Lowest priority (4): goes to the group that has the lightest atom at the first point of difference moving away from the stereocenter. 3. If Necessary, orient the molecule so that the 4th priority group is pointing away from your eye. 4. Determine if sequence of 1→2→3 is clockwise or counterclockwise. Clockwise = (R) Counterclockwise = (S)
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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