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Recyclable diguanidinium-BINAP and PEG-BINAP supported catalysts: syntheses and use in Rh(I) and Ru(II) asymmetric hydrogenation reactions

✍ Scribed by Patricio Guerreiro; Virginie Ratovelomanana-Vidal; Jean-Pierre Genêt; Philippe Dellis

Book ID: 104230544
Publisher: Elsevier Science
Year: 2001
Tongue: French
Weight: 73 KB
Volume: 42
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)00476-2

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✦ Synopsis

The syntheses of new recyclable cationic BINAP type ligand diguanidinium 1 and PEG-bound BINAP ligand 2 are described. The use of ethylene glycol instead of water increased the enantioselectivity in the ruthenium-promoted hydrogenation reaction of functionalized ketones. These catalysts are highly active (catalyst/substrate ratio up to 1:10 000, up to 99% e.e.). The rhodium-mediated hydrogenation of acetamidoacrylic acid was also examined using 1 and 3 as chiral auxiliaries.

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ChemInform Abstract: Recyclable Diguanid

ChemInform Abstract: Recyclable Diguanidinium-BINAP and PEG-BINAP Supported Catalysts: Syntheses and Use in Rh(I) and Ru(II) Asymmetric Hydrogenation Reactions.

✍ Patricio Guerreiro; Virginie Ratovelomanana-Vidal; Jean-Pierre Genet; Philippe D 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 34 KB 👁 2 views

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