(R,R)-N-phenyl-3,4-bis(diphenylphosphino)pyrrolidine: an N-aryl pyrrolidine lig...

• Author(s): Gonsalves, António Manuel d'Albuquerque Rocha ; Serra, Maria Elisa da Silva ; Silva, Manuela Ramos ; Beja, Ana Matos ; Paixão, José António ; Veiga, Luiz Alte da
• Date: 2001
• Persistent ID: http://hdl.handle.net/10316/5223
• Origin: Estudo Geral - Universidade de Coimbra
• Subject(s): Transfer hydrogenation; Pyrrolidine diphosphine; Asymmetric catalysis; Five-membered chelate; Rhodium
• Document Type: Article
• Language: English

Description

The N-aryl pyrrolidine diphosphine (R,R)-N-phenyl-3,4-bis(diphenylphosphino)pyrrolidine was obtained from natural tartaric acid. Contrary to our preliminary expectations, this new chiral ligand proved to be less selective than the corresponding N-benzyl pyrrolidine diphosphine. An attempted explanation of the observed behaviour based on the stereochemistry of the ligand as shown by X-ray crystallography is presented. http://www.sciencedirect.com/science/article/B6TGM-42G6XGY-8/1/25fa9c4e0f48edebc992db1e0b302bf0