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Start Over Author "Brieger, Lukas" Journal angewandte chemie international edition
4 results on '"Brieger, Lukas"'

4. Aminopotassiation by Mixed Potassium/Lithium Amides: A Synthetic Path to Difficult to Access Phenethylamine Derivates.

Author

Seymen, Andreas, Opper, Ulrike, Voß, Andreas, Brieger, Lukas, Otte, Felix, Unkelbach, Christian, O'Shea, Donal F., and Strohmann, Carsten

Subjects
AMIDES, ALKALI metals, LITHIUM amides, METALS, POTASSIUM
Abstract

Insights gained from a comparison of aminometalation reactions with lithium amides, potassium amides and mixed lithium/potassium amides are presented. A combination of structural characterization, DFT calculations and electrophile reactions of aminometalated intermediates has shown the advantages of using a mixed metal strategy. While potassium amides fail to add, the lithium amides are uncontrollable and eliminated, yet the mixed K/Li amides deliver the best of both systems. Aminopotassiation proceeds to form the alkylpotassium species which has enhanced stability over its lithium counterpart allowing for its isolation and thereby its further characterization. [ABSTRACT FROM AUTHOR]

Published
2020
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