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Synthesis And Application Of Novel Chiral Ionic Liquids Derived From Alpha-Pinene, Yun Wang
Synthesis And Application Of Novel Chiral Ionic Liquids Derived From Alpha-Pinene, Yun Wang
Theses
Two new chiral ionic liquids of oxazolinium cations derived from a-pinene: 9,9-Dimethyl-4-propenyl-5-propyl-3 -oxa-5-azonia-tricyclo [6.1.1.0 2,6] dec-4-ene tetrafluoro borate ([ChIPOZ] [BF4]) and 9,9-Dimethyl-4-propenyl-5-propyl-3-oxa-5-azonia-tricyclo [6.1.1.0 2,6] dec-4-ene hexafluoro phosphate ([ChIPOZ][PF6]). Both these chiral ionic liquids have been applied in enantiomeric copper-catalyzed 1,4-addition reactions with diethyl zinc. The enantiomeric excess for product using [ChIPOZ][BF4] is above 70% and for [ChIPOZ][PF6] is above 30%. Chiral ionic liquids worked as phase transfer catalysts In this reaction.
α-Pinene was used as the "chiral pool" in the synthesis of amino alcohol through a two-step reaction, followed by …
Analysis Of Phycotoxin And Mycotoxin, Contaminants In Foods, Using Liquid Chromatography - Mass Spectrometry Techniques, Ana Brana Magdalena
Analysis Of Phycotoxin And Mycotoxin, Contaminants In Foods, Using Liquid Chromatography - Mass Spectrometry Techniques, Ana Brana Magdalena
Theses
The impact of phycotoxins and mycotoxins on human and animal health are of important concern for worldwide authorities and the scientific community. Liquid chromatography-mass spectrometry (LC-MS) techniques have been developed, optimised and validated for the analysis of these toxins.
Phycotoxins are potentially toxic substances, which are produced by marine phytoplankton and which may accumulate in shellfish or finfish. Azaspiracid poisoning (AZP) is a recently discovered syndrome that has been implicated in several incidents of human intoxications. A study was undertaken to examine the distribution of azaspiracids (AZA) in scallops {Pecten maximiis) and mussels {Mytiliis edulis). Domoic acid (DA) is an …