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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Quaternary Ammonium Salts in Asymmetric Hydrogenations – Additives, Reaction and Immobilization Media
 Floriš, T. ; Klusoň, Petr ; Muldoon, M.J.
The inhibited catalytic activity of Ru-BINAP in MAA hydrogenation through ILs based on anion derivates of acids with higher pKa revealed a side way in the application of the ILs produces from renewable sources, (chiral) carboxylates (betaine, lactates) in genaral. On the other hand the employment of structurally modified quaternary ammonium cations seems to be the perspective route not only in optical yeld increase. Thus quaternary ammonium bromides such as chorides satisfied the reaction parameters enhancement. On the basis of our previous results, envirnmentaly benign choline chloride was applied as a crucial additive in optimized solvent system composed of methanol, CO2 and water.
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