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Synthesis of Optically Active Ionic Liquids from Amion Acids and Characterization of Structure

Author: BaiJinFang
Tutor: ZhongChongMin
School: Harbin Normal University
Course: Organic Chemistry
Keywords: Ionic liquids Optically active Amino acids Synthesis and Characterization
CLC: O645.1
Type: Master's thesis
Year: 2010
Downloads: 84
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Abstract


The optically active ionic liquids is one of the hotspots of modern organic chemistry , it is because of their good nature and friendly environment , wide range of applications have attracted much attention of the scientists . The method of synthesis of optically active ionic liquids , but there are common problems : expensive and synthetic difficulties . Therefore , the starting point of this thesis is to find inexpensive chiral source, optically active ionic liquid was prepared by a simple method . Amino acids are the nature abound chiral source , cheap and easy to get . The papers selected both leucine and phenylalanine natural chiral source , mild preparation conditions , the method is simple . There are three rigid five-membered ring , conformation, stability, and the structure of the target product can make a more stable chiral . This dissertation includes the content of the following two parts : 1 . Starting the synthesis of the desired product from leucine and phenylalanine precursor - chiral bidentate nitrogen ligand 2 , 2' -bis oxazoline by 1H NMR spectra and elemental analysis to characterize this step to do the preliminary work for the preparation of optically active ionic liquids . 2 as raw materials, to the chiral nitrogen ligand and the product was obtained by forming an imidazole ring . Prepared a series of optically active ionic liquids by an anion exchange reaction . The product structure characterization using 1H NMR spectroscopy, infrared spectroscopy , elemental analysis , and other means of detection . Determination of the solubility and the melting point of the product . By thermal gravimetric analysis to examine the stability of several products . Low melting point , good solubility and thermal stability make it a chance to participate in a more organic reaction to broaden the application field .

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CLC: > Mathematical sciences and chemical > Chemistry > Physical Chemistry ( theoretical chemistry ),chemical physics > Solution > Liquid solution
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