✦ LIBER ✦

New bis(oxazoline) ligands with secondary binding sites for the asymmetric cyclopropanation of furans

✍ Scribed by Marina Schinnerl; Claudius Böhm; Michael Seitz; Oliver Reiser

Book ID: 104359705
Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 166 KB
Volume: 14
Category: Article
ISSN: 0957-4166
DOI: 10.1016/s0957-4166(03)00094-6

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✦ Synopsis

The diastereo-and enantioselective cyclopropanation of furans was achieved in up to 91% ee using a new set of chiral bis(oxazoline) ligands that are able to use secondary binding sites to enhance selectivity. In contrast, with substrates such as styrene and N-Boc-pyrrole, with which no secondary interactions with the ligands can occur, only moderate selectivities (<50% ee) were achieved.

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## Abstract For Abstract see ChemInform Abstract in Full Text.