Enzymatic reactions in ionic liquids: lipase-catalysed kinetic resolution of racemic, P -chiral hydroxymethanephosphinates and hydroxymethylphosphine oxides
Lipase-mediated acetylation of racemic P-chiral hydroxymethanephosphinates and hydroxymethylphosphine oxides was performed in ionic liquids under kinetic resolution conditions. Lipase AK (Amano) and lipase from Pseudomonas fluorescens (Fluka) were up to six times more enantioselective in BMIM-PF6, solutions than in common organic solvents. On the contrary, the analogous reactions performed in BMIM-BF4, were practically non-stereoselective. (C) 2002 Published by Elsevier Science Ltd.
Supercritical carbon dioxide as a reaction medium for enzymatic kinetic resolution of P-chiral hydroxymethanephosphinates
Kinetic resolution of racemic P-chiral hydroxymethanephosphinates via their lipase-promoted acetylation in supercritical carbon dioxide as the reaction medium was for the first time investigated Under various conditions. The reactivity and selectivity could be controlled by changing the pressure. (c) 2005 Elsevier Ltd. All rights reserved.
Maier, Ludwig; Spoerri, H., Phosphorus, Sulfur and Silicon and the Related Elements, 1992, vol. 70, # 1/2, p. 49 - 58