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The Use of Magnetic Starch As a Support for an Ionic Liquid-Β-Cyclodextrin Based Catalyst for the Synthesis of Imidazothiadiazolamine Derivatives Publisher Pubmed



Bahadorikhalili S1 ; Ansari S2 ; Hamedifar H2 ; Mahdavi M3
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Authors Affiliations
  1. 1. Institute of Mechanics, Iranian Space Research Center, Shiraz, Iran
  2. 2. CinnaGen Medical Biotechnology Research Center, Alborz University of Medical Sciences, Karaj, Iran
  3. 3. Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, 14176, Iran

Source: International Journal of Biological Macromolecules Published:2019


Abstract

In this paper, a novel catalyst is introduced based on the introduction of an ionic liquid onto the β-cyclodextrin. The ionic liquid-β-cyclodextrin was anchored to magnetic starch (denoted βCD-IL@M-Starch)and fully characterized by several methods including TEM, TGA, VSM and FT-IR. The catalyst was used for the synthesis of imidazo[2,1-b][1,3,4]thiadiazol-5-amine and imidazo[1,2-a]pyridin-3-amine derivatives. βCD-IL@M-Starch catalyst showed very good activity in the synthesis of diphenylimidazo[2,1-b][1,3,4]thiadiazol-5-amine derivatives from the corresponding benzaldehyde, semicarbazide, benzaldehydes and isocyanides. The products were obtained in a mild reaction conditions in good isolated yields in the presence of βCD-IL@M-Starch as catalyst. The catalyst showed to be magnetically reusable, and gave very good results in 10 sequential reactions. © 2019 Elsevier B.V.
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