Study On The Synthesis And Performances Of New Calix[4]arene Derivatives

Calixarenes were the third generation supermolecule after crown ether and cyclodextrin. Due to their easy functionalization and strong complexing properties towards cations, anions and neutral molecules, they have received particular interests by numerous chemists in recent years. Functional calixarenes have been applied successfully to biomimetic research and separation science and technology. Several calix[4]arene and its derivatives were synthesized and their performance of extracted iron , plumbum were studied and their performance of Antioxidizes and antiultraviolet of calixarene and its derivatives were studied too. This thesis includs the following main points:1 The ester derivative of p-tert-butyl calix[4]arene 2 was synthesized by using self-made p-tert-butylcalix[4]arene & ethyl bromoacetate and its yield got to 65.7%. The compound 3 was synthesized by using coumpound 2 & hydrazine hydrate(85%) and its yield got to 85.4%, Its structure was confirmed by ¹H NMR, ¹³C NMR, IR, MS. By using compoud 2 & 1,2-diaminoaethan ,we did not get the aim coumpound,but got a new coumpound 4 and its yield got to 31.0%.Its structure was confirmed by ¹H NMR, ¹³C NMR, IR.2 By using compoud 4 & salicylaldehyde the compound 5 was synthesized in the ethyl alcohol and its yield got to 55.7%. The compound 6 was synthesized by using coumpound 3 & Cinnamoyl chloride and by using PEG-400 as Catalyst,and its yield got to 44.7% .Their structure was confirmed by ¹H NMR, ¹³C NMR, IR, MS.3 The performance of antiultraviolet of calix[4]arene and its deriva-tives was studied by using UV spectrophotometer. The result shows that compoud 5 had performance of antiultraviolet. Performance of antioxidizes of calix[4]arene and its derivatives wa studied with the methed of DPPH.and the result shows that calix[4]arene and its derivatives had the function of eliminating DPPH, the copound 3 was the best ,its rate of elimination was up to90.6%.4 It studied that performance of extraction iron, plumbum of calix[4]arene and its derivatives by the means of TAS-986 spectrophotometer. The result shows that calix[4]arene and its derivatives had extracted well iron & plumbum and their rates of extraction were got to 53.4% and 91.9%.