Carboxylate‐Based, Room‐Temperature Ionic Liquids as Efficient Media for Palladium‐Catalyzed Homocoupling and Sonogashira–Hagihara Reactions of Aryl Halides
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Media type:
E-Article
Title:
Carboxylate‐Based, Room‐Temperature Ionic Liquids as Efficient Media for Palladium‐Catalyzed Homocoupling and Sonogashira–Hagihara Reactions of Aryl Halides
Published in:
European Journal of Organic Chemistry, 2012 (2012) 2, Seite 305-311
Language:
English
DOI:
10.1002/ejoc.201100701
ISSN:
1434-193X;
1099-0690
Origination:
Footnote:
Description:
AbstractCarboxylate‐based salts are introduced as easily prepared, cheap and stable ionic liquids (ILs) that act as the base, ligand, reducing agent and media for the efficient phosphane‐free, palladium‐catalyzed homocoupling reaction of aryl iodides and bromides. The efficient copper and phosphane‐free Sonagashira coupling reaction of aryl iodides and bromides is also demonstrated in these ILs. One of the ILs was also phosphorylated and showed high efficiency and recyclability as a medium, and was also used as a ligand for palladium‐catalyzed homocoupling and copper‐free Sonogashira reactions of aryl iodides and bromides.