Evonik Degussa Gmbh

Irina Jovel

Klaus Huthmacher

Matthias Beller

Christoph Weckbecker

Ralf Jackstell

Martin Hateley

The present invention relates to the preparation of &#x3b1;-hydroxy ketones of the general formula I. In particular, the invention relates to novel imidazolinium carboxylate adducts and to a novel process for using catalytic amounts of imidazolium and imidazolinium carboxylate adducts in the acyloin reaction of aldehydes to prepare hydroxy ketones of the general formula I, where R and R' are the same or different and are each H or a straight-chain or branched and optionally substituted C-C-alkyl radical, and R&#x2033;&#x2550;HCSCHCH, t-butyl, n-butyl, sec-butyl, n-propyl, i-propyl, an optionally heteroatom-substituted C-C-aryl, heteroaryl, C-C-arylalkyl, especially phenylmethyl, where phenyl may again be heteroatom-substituted, or heteroalkyl.

Growing community of inventors

Rostock, Germany

Irina Jovel