Dual function of amino acid ionic liquids (Bmim[AA]) on the degradation of the organophosphorus pesticide, Paraoxon®
作者:Javiera I. Morales、Roberto Figueroa、Mabel Rojas、Daniela Millán、Ricardo A. Tapia、Paulina Pavez
DOI:10.1039/c8ob01928b
日期:——
described. These ILs were used for the first time as reaction media to achieve more eco-friendly Paraoxon degradation. The results show that the degradation of Paraoxon in these Bmim[AA]s is accomplished with great efficiency and without an extra nucleophilic agent. Therefore, we propose that all the Bmim[AA]s used in this study have a dual role in the outcome of this reaction; as a nucleophile and a solvent
Complex-precipitation using functionalized chiral ionic liquids with L-proline anion and chromatographic analysis for enantioseparation of racemic amino acids
作者:Huimin Zang、Shun Yao、Yingjie Luo、Dan Tang、Hang Song
DOI:10.1002/chir.23011
日期:2018.11
solubility in common solvents were determined for further resolution application. The effect of different cations in these CILs was explored on the separation of racemic phenylalanine in complex‐precipitation way. Moreover, various factors were systematically investigated for their effects on resolution efficiency, including the type of additive copper salts, the molar ratio of Cu (II) to CIL, pH value
A potential greener protocol for peptide coupling reactions using recyclable/reusable ionic liquid [ $$\hbox {C}_{4}\hbox {-DABCO}][\hbox {N(CN)}_{2}$$ C 4 -DABCO ] [ N(CN) 2 ]
作者:Manashjyoti Konwar、Nageshwar D Khupse、Prakash J Saikia、Diganta Sarma
DOI:10.1007/s12039-018-1461-0
日期:2018.5
systems. Here, we carried out the peptide bond formation reaction in one of the environmentally secure solvents, ‘ionic liquids’ in the presence of coupling reagent and in the absence of external base at room temperature, affording dipeptides in good to excellent yields. GRAPHICAL ABSTRACTSYNOPSIS We carried out the peptide bond formation reaction in ionic liquids in the presence of a coupling reagent
Asymmetric Aldol Reaction Catalyzed by the Anion of an Ionic Liquid
作者:Vincent Gauchot、Andreea R. Schmitzer
DOI:10.1021/jo300737u
日期:2012.6.1
its applications as a catalyst for the asymmetric aldolreaction. By performing the aldolreaction in [Bmim]NTf2 as a solvent, we report excellent isolated yields of the aldol product (up to 99%), as well as modest to excellent selectivities (dr superior to 99:1. ee up to 89%). Mechanistic insights and the origins of the selectivity of the aldolreaction are discussed on the basis of the results obtained