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Metal‐Containing Ionic Liquids as Efficient Catalysts for Hydroxymethylation in Water
Author(s) -
Bica Katharina,
Gaertner Peter
Publication year - 2008
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.200800323
Subject(s) - chemistry , ionic liquid , catalysis , tandem , aqueous solution , formaldehyde , metal , organic chemistry , ionic bonding , polymer chemistry , inorganic chemistry , ion , materials science , composite material
The iron‐containing ionic liquid butylmethylimidazolium tetrachloroferrate (bmim‐FeCl 4 ) proved to be an efficient and recyclable catalyst for the hydroxymethylation of β‐keto esters using aqueous formaldehyde and a low catalyst loading of up to 0.1 mol‐% without co‐solvents or additional surfactants. An useful and high‐yielding approach to hydroxymethylated keto esters as well as to 3‐disubstitued butyrolactones via tandem hydroxymethylation–lactonization could thus be established.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)