Rapid Electrophilic 211At‐Astatination of Trimethylgermyl Arenes
A set of 211At‐astatoarenes were synthesized from corresponding trimethylgermyl arenes with an average radiochemical conversion (RCC) of ca. 50 % for electron‐rich and approx. 70 % in case of electron‐deficient arenes. Both electron rich and electron poor substrates were successfully radiolabeled at...
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Published in | ChemPlusChem (Weinheim, Germany) Vol. 89; no. 9; pp. e202400254 - n/a |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
01.09.2024
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Subjects | |
Online Access | Get full text |
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Summary: | A set of 211At‐astatoarenes were synthesized from corresponding trimethylgermyl arenes with an average radiochemical conversion (RCC) of ca. 50 % for electron‐rich and approx. 70 % in case of electron‐deficient arenes. Both electron rich and electron poor substrates were successfully radiolabeled at room temperature (RT) using relatively low precursor amounts (0.15 μmol/0.02 mL solvent (7.5 mM)). Ready access to ortho‐, para‐ and meta‐ astatinated arenes was achievable. Optimized reaction conditions were successfully applied to label a poly (ADP‐ribose) polymerase (PARP) inhibitor with a RCC of approx. 50 %. We believe that trimethylgermyl derivatives are a viable addition to the astatination precursor toolbox and facilitate astatination of arenes. The developed labeling method should easily be applicable for productions under good manufacturing practice (GMP).
211At‐Astatodegermylation: Different ortho‐, meta‐, and para‐substituted trimethylgermyl arenes were astatinated at low precursor amounts (0.15 μmol) in trifluoroacetic acid with an average radiochemical conversion (RCC) of ca. 50 % for electron‐rich and approx. 70 % in case of electron‐deficient arenes. |
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Bibliography: | Authors contributed equally ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2192-6506 2192-6506 |
DOI: | 10.1002/cplu.202400254 |