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Asymmetric Synthesis -Transition state Energies

Enantioselectivity-Basic Principles

By use of certain catalysts and suitable reaction condions it is possible to make one of the enantiomers as the major/exclusive product. This is enantioselective synthesis

The diagram shows the two transition states for the formation of the R and S isomers and the transition state energies are same that is the difference in energies for the two pathways is zero.

No enantioselectivity.

The enantiomers are formed in about equal amounts.

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