Introduction to : Configurational isomerism, D - L isomerism, Fischer projections

Tutorial 3

        

Decide whether the molecule 1 ( L according to Fischer) is R or S in the CIP system!

Step 1: Click on molecule 1 to represent it in space according to →       Fischer convention

Step 2: Click on the molecule to represent in space its enantiomer 2 by exchanging two substituents of the atom C * in such a way that the substituent H is at the back:

Step 3: Click on this last molecule to find its CIP configuration:

Fourth step: Click again to see finally the CIP configuration of the initial molecule 1 (the enantiomer of 2!) :