- Design and synthesis of polymeric chiral bicyclo[3.3.0] diene as reusable ligand for rhodium-catalyzed asymmetric 1,4-addition
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A series of A-B type sterically regular bicyclio[3.3.0] diene-based polymers were designed and synthesized as immobilized chiral diene ligands for asymmetric catalysis. With polymeric diene 6b, good to excellent enantioselectivities can be achieved in Rh-catalyzed asymmetric 1,4-addition of arylboronic acids to α,β-unsaturated ketones. A series of A-B type sterically regular bicyclio[3.3.0] diene-based polymers were designed and synthesized as immobilized chiral diene ligands for asymmetric catalysis. By using polymeric diene, good to excellent enantioselectivities can be achieved in Rh-catalyzed asymmetric 1,4-addition of arylboronic acids to α,β-unsaturated ketones. Copyright
- Yang, Hongyu,Xu, Minghua
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- Synthesis of components for supramolecules incorporating cycloheptatriene building blocks
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Molecular threads I-III incorporating 1,3,5-cycloheptatriene units have been synthesized by three methods. Bridges were designed as ether (9, 14, 18 and 22), ester (4 and 14) and amino functions (25), respectively. The attachment of a second aryl residue
- Neigenfink, J.,Martin, A.,Wendel, V.,Abraham, W.
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experimental part
p. 632 - 641
(2011/10/13)
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