Journal
TETRAHEDRON
Volume 67, Issue 2, Pages 546-553Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2010.10.079
Keywords
Mannich addition; Chalkogenazines; Proline; Heterogeneous catalysis; Styrene copolymerisation
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Funding
- Heinz Neumuller-Stiftung
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The proline-catalyzed Mannich addition of ketones to chalkogenazines is reported. Yields and enantioselectivities of the corresponding products were good to excellent, using different types of organocatalysts. Furthermore the immobilization of hydroxyproline into a readily synthesized polystyrene-copolymer was accomplished. The catalytic performance of this heterogeneous catalyst was successfully demonstrated in the discussed Mannich reaction. (C) 2010 Elsevier Ltd. All rights reserved.
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