✦ LIBER ✦

Enantioselective Cyclopropanation of Styrene Catalysed by Copper(I) Complexes with Chiral Oxazolines

✍ Scribed by Giorgio Chelucci; Maria G. Sanna; Serafino Gladiali

Publisher: Elsevier Science
Year: 2000
Tongue: French
Weight: 140 KB
Volume: 56
Category: Article
ISSN: 0040-4020
DOI: 10.1016/s0040-4020(00)00144-7

No coin nor oath required. For personal study only.

✦ Synopsis

AbstractÐA large set of copper complexes, prepared in situ from copper(I)-tri¯ate and a variety enantiopure oxazoline ligands, was assessed as chiral catalysts in the enantioselective cyclopropanation of styrene by ethyl diazoacetate. Enantioselectivities up to 60% and up to 52%, respectively, for trans-and cis-2-phenylcyclopropanecarboxylate were observed.

📜 SIMILAR VOLUMES

ChemInform Abstract: Enantioselective Cy

ChemInform Abstract: Enantioselective Cyclopropanation of Styrene Catalyzed by Copper(I) Complexes with Chiral Oxazolines.

✍ Giorgio Chelucci; Maria G. Sanna; Serafino Gladiali 📂 Article 📅 2001 🏛 John Wiley and Sons ⚖ 32 KB 👁 2 views

ChemInform Abstract: Enantioselective Ca

ChemInform Abstract: Enantioselective Catalytic Cyclopropanation of Styrenes by Copper Complexes with Chiral Pinene-[5,6]-bipyridine Ligands.

✍ Didier Loetscher; Stefan Rupprecht; Helen Stoeckli-Evans; Alex von Zelewsky 📂 Article 📅 2001 🏛 John Wiley and Sons ⚖ 36 KB 👁 2 views

Bis(oxazoline)·copper(I)-catalyzed enant

Bis(oxazoline)·copper(I)-catalyzed enantioselective cyclopropanation of cinnamate esters with diazomethane

✍ André B. Charette; Marc K. Janes; Hélène Lebel 📂 Article 📅 2003 🏛 Elsevier Science 🌐 English ⚖ 252 KB

Chiral bis(oxazoline)-copper(I) complexes were found to be effective catalysts for the enantioselective cyclopropanation reaction of trans-cinnamate esters exploiting an argon flow mediated diazomethane addition method. After optimization of the catalyst structure, good yields and enantiomeric exces

Bis(oxazoline)×Copper(I)-Catalyzed Enant

Bis(oxazoline)×Copper(I)-Catalyzed Enantioselective Cyclopropanation of Cinnamate Esters with Diazomethane.

✍ Andre B. Charette; Marc K. Janes; Helene Lebel 📂 Article 📅 2003 🏛 John Wiley and Sons ⚖ 150 KB 👁 2 views

ChemInform Abstract: Oxaziridine-Mediate

ChemInform Abstract: Oxaziridine-Mediated Enantioselective Aminohydroxylation of Styrenes Catalyzed by Copper(II) Bis(oxazoline) Complexes.

✍ David J. Michaelis; Kevin S. Williamson; Tehshik P. Yoon 📂 Article 📅 2009 🏛 John Wiley and Sons ⚖ 31 KB 👁 1 views

Chiral Copper-Semicorrin Complexes as En

Chiral Copper-Semicorrin Complexes as Enantioselective Catalysts for the Cyclopropanation of Olefins by Diazo Compounds

✍ Dipl.-Chem. Hugo Fritschi; Dipl.-Naturwiss. Urs Leutenegger; Dr. Andreas Pfaltz 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 English ⚖ 240 KB 👁 2 views

German version: Angew. Chem. 98 (1986) 1028 [ I ] a) H. B. Kagan ("Asymmetric Synthesis Using Organometallic Catalysts'') in G. Wilkinson, F. G. A. Stone, E. W. Abel (Eds.