Tetraalkylammonium and 1,3-Dialkylimidazolium Salts with Fluorinated Anions as Recoverable Phase-Transfer Catalysts in Solid Base-Promoted Cross-Aldol Condensations

✍ Scribed by Galina V. Kryshtal; Galina M. Zhdankina; Sergei G. Zlotin

• Book ID: 102170408
• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 92 KB
• Volume: 2005
• Category: Article
• ISSN: 1434-193X
• DOI: 10.1002/ejoc.200400880

✦ Synopsis

Abstract

Tetraalkylammonium and 1,3‐dialkylimidazolium tetrafluoroborates and hexafluorophosphates were employed for the first time as recoverable phase‐transfer catalysts in multiphase reactions of CH‐acids, in particular in solid base‐promoted cross‐aldol condensations. The catalysts retained their catalytic activity over several reaction cycles. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)