Synthesis of alpha-hydroxy ketones

Details Synthesis of alpha-hydroxy ketones Synthesis of alpha-hydroxy ketones

C - Chemistry, Metallurgy

07

C

260/233.2, 260/5

C07C 45/64 (2006.01) C07C 45/00 (2006.01) C07C 45/78 (2006.01) C07C 45/79 (2006.01) C07C 45/80 (2006.01) C07C 45/81 (2006.01) C07C 47/19 (2006.01)

Patent

CA 2021137

Case 7282(2) ABSTRACT OF THE DISCLOSURE SYNTHESIS OF ALPHA-HYDROXY KETONES This invention relates to a process for condensing aldehydes to alpha-hydroxyketones in a liquid system containing an aldehyde and an active condensation catalyst formed by the abstraction of HX from a thiazolium salt in which X is the anion. The reaction is carried out in the absence of a base (other than the active catalyst) and the anion X. The catalyst is rendered free of the undesirable base and the anion X because these are the cause of premature deactivation of the catalyst.

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