Term: diastereoselectivity
https://doi.org/10.1351/goldbook.08162

Definition:
Preferential formation in a chemical reaction of one diastereoisomer over another.

Note: This can be expressed quantitatively by the diastereoisomeric excess or by the diastereomeric ratio, which is preferable because it is more closely related to a Gibbs-energy difference.

Source: PAC, 2022, 94, 353. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 2021)' on page 401 (https://doi.org/10.1515/pac-2018-1010)

Citation: 'diastereoselectivity' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.08162

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